久久精品熟女亚洲av麻豆-欧美最猛黑人xxxx-午夜家庭影院-米奇7777狠狠狠狠视频影院-超碰97资源站

歡迎光臨浙江永發機電有限公司網站！
銷售咨詢熱線：
15356626618
您的位置： 網站首頁 > 產品中心 > 三相電機 > 中型高壓三相異步電動機 > Y（YKS）中型高壓三相異步電動機

  • 中型高壓三相異步電動機Y（YKS）

中型高壓三相異步電動機

是我公司近年開發的新產品，分別按我國相關中型高壓三相異步電動機的標準制造，并符合電工委員會IEC標準的要求，它具有效率高、噪聲低、震動小、性能可靠，安裝維護方便等優點。
瀏覽次數： 1726
價格： 我要詢價
廠商性質： 生產廠家
更新時間： 2024-09-25

產品概述

 Y(YKS)、YR(YRKS)、YKK、YRKK系列中型高壓三相異步電動機采用了新材料及新工藝，機座采用鋼板焊接而成的箱式結構，重量輕，剛度好，定子采用外壓裝工藝，定子繞組采用F級絕緣，端部有牢靠的綁扎和固定，并浸F級環氧樹脂絕緣漆，故定子具有良好的絕緣性能及防潮性能，Y(YKS)、YKK系列為鼠籠型轉子異步電動機，其鼠籠轉子采用壓力鑄鋁，結構堅實牢固可靠；YR（YRKS）、YRKK系列為繞線型轉子異步電動機，其轉子線圈采用銅條外包F級絕緣材料，線圈間及引出線與線圈間均有可靠的焊接，保證電動機的可靠運行。電動機一般為單軸伸，可按用戶要求制成雙軸伸；電動機采用滾動軸承，用3#鋰基酯潤滑，軸承的防護等級為IP44或IP54；從軸伸端看，電動機的主接線盒位于機座的右側，也可按用戶的要求裝在左側。  

中型高壓三相異步電動機產品概述  
    Y(YKS)、YR(YRKS)、YKK、YRKK系列是我公司近年開發的新產品，分別按我國相關的標準制造，并符合電工委員會IEC標準的要求，它具有效率高、噪聲低、震動小、性能可靠，安裝維護方便等優點。  
   
    Y、YR系列的外殼防護等級為IP23，采用風扇自冷；  
    YKK、YRKK系列的外殼防護等級為IP44或IP54，機座頂部安裝有封閉式空－空冷卻器；  
    YKS、YRKS系列的外殼防護等級為IP44或IP54，機座頂部安裝有封閉式空－水冷卻器。  
    Y（YKS）、YR（YRKS）、YKK、YRKK系列電源的額定頻率為50Hz、額定電壓為6KV及10KV兩種，可按用戶要求制成60Hz或其它的電壓等級。  
    Y（YKS）、YR（YRKS）、YKK、YRKK系列可用于驅動各種通用機械，如壓縮機、風機、水泵、破碎機、軋鋼機、卷揚機、切削機床等，廣泛應用于礦山、機械、石油、電站、化工、冶金、水泥、造紙、制糖、港口等行業。

型號與功率

6KV 50Hz Y(IP23)、YKS(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

355

3

220

-

-

-

-

4

250

-

5

280

220

6

315

250

400

1

355

-

-

-

-

2

400

280

-

3

450

315

220

4

500

355

250

5

560

400

280

450

1

630

450

315

220

-

2

710

500

355

250

-

3

800

560

400

280

-

4

900

630

450

315

220

5

-

-

-

355

250

500

1

1000

710

500

400

280

2

1120

800

560

450

315

3

1250

900

630

500

355

4

1400

1000

710

560

400

5

-

-

-

630

450

6KV 50Hz YR(IP23)、YRKS(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

355

1

220

-

-

-

-

2

250

3

280

400

1

315

220

-

-

-

2

255

250

-

3

400

280

220

4

450

315

250

5

500

355

280

450

1

560

400

315

220

-

2

630

450

355

250

-

3

710

500

400

280

-

4

800

560

450

315

220

5

-

-

-

355

250

500

1

900

630

500

400

280

2

1000

710

560

450

315

3

1120

800

630

500

355

4

1250

900

710

560

400

6KV 50Hz YKK(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

355

1

185

-

-

-

-

2

200

3

220

4

250

400

1

-

185

-

-

-

2

280

200

-

3

315

220

-

4

355

250

185

5

400

280

200

6

450

315

220

450

1

-

-

-

185

-

2

500

355

250

200

-

3

560

400

280

220

-

4

630

450

315

250

185

5

710

500

355

280

200

500

1

800

560

400

315

220

2

900

630

450

355

250

3

1000

710

500

400

280

4

1120

800

560

450

315

6KV 50Hz YRKK(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

355

1

185

-

-

-

-

2

200

3

220

400

1

250

185

-

-

-

2

280

200

-

3

315

220

-

4

355

250

185

5

400

280

200

450

1

450

315

220

185

-

2

500

355

250

200

-

3

560

400

280

220

185

4

630

450

315

250

200

500

1

710

500

355

280

220

2

800

560

400

315

250

3

900

630

450

355

280

4

1000

710

500

400

315

10KV 50Hz Y(IP23)、YKS(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

450

1

355

-

-

-

-

2

400

-

3

450

315

4

500

355

5

560

400

6

630

450

500

1

710

500

315

-

-

2

800

560

355

-

3

900

630

400

280

4

1000

710

450

315

5

1120

800

500

355

6

-

-

560

400

10KV 50Hz YKK(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

450

1

220

200

185

-

-

2

250

220

200

3

280

250

220

4

315

280

-

5

355

315

-

6

400

355

-

7

450

-

-

500

1

500

400

250

185

-

2

560

450

280

200

200

3

630

500

315

220

220

4

710

560

355

250

 

5

800

-

400

280

 

6

-

-

-

315

 

10KV 50Hz YR(IP23)、YRKS(IP44)系列

機座號
Frame Size

同步轉速 Synchronous Speed (r/min)

1500

1000

750

600

500

功率Power (kw)

450

1

315

-

-

-

-

2

355

-

3

400

280

4

450

315

5

500

355

6

560

400

500

1

630

450

280

-

-

2

710

500

315

-

3

800

560

355

250

4

900

630

400

280

5

1000

710

450

315

6

-

-

500

355

訂貨注意事項

1.用戶訂貨時，請注明電動機的型號、額定功率、額定電壓、額定頻率、同步轉速、防護等級、冷卻方式、安裝方式、旋轉方向和出線位置。

2.用戶如需安裝測溫元件或加熱器時，請在訂貨時同時提出。

3.用戶如有其它特殊要求時，需另訂技術協議。

Notice on order

1.When Placing an order, please specify the type, rated output, rated voltage, rated frequency, protection degree, cooling method, mounting arrangements, rotation direction and location of the terminal box.

2.Special designs are available on demand of installation of temperature sensors of heaters.

3.An additional technical agreement must be signed for special requirements.

主要技術數據

6KV Y系列（IP23）、YKS系列（IP44）

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		Mst
——
Mn		1st
——
In		重量
Weight
kg
Y3553-422025.5148094.00.8852.721.196.112000
Y3554-425028.5148094.10.8962.491.135.692050
Y3555-428032.0148094.20.8942.491.145.702090
Y3556-431535.9148094.30.8952.471.185.742120
Y4001-435540.3148094.20.8992.541.025.782480
Y4002-440045.3148094.40.9012.491.025.722570
Y4003-445050.6148094.60.9052.441.035.692650
Y4004-450056.0148094.80.9062.511.115.932730
Y4005-456062.4148094.90.9102.501.146.012830
Y4501-463070.4148495.10.9052.451.176.033060
Y4502-471078.9148495.30.9092.441.216.133300
Y4503-480088.7148495.40.9102.361.205.993700
Y4504-490099.6148495.50.9112.261.175.793800
Y5001-41000112.2148695.70.8962.261.316.024350
Y5002-41120125.8148695.60.8962.111.235.664500
Y5003-41250140.0148695.70.8972.061.245.604600
Y5004-41400156.4148695.80.8992.041.285.624800
Y3555-622026.598693.50.8552.311.515.512100
Y3556-625030.198693.60.8542.311.565.582200
Y4002-628033.898793.70.8512.331.185.312470
Y4003-631537.898793.80.8552.241.145.152550
Y4004-635542.298794.10.8612.181.145.082620
Y4005-640047.498794.30.8622.141.145.042750
Y4501-645052.998894.60.8662.251.165.283480
Y4502-650059.098894.60.8622.211.185.213600
Y4503-656065.598894.80.8682.211.235.324000
Y4504-663073.098895.00.8752.281.335.634100
Y5001-671082.799095.10.8682.171.215.404150
Y5002-680093.399095.20.8662.081.145.164300
Y5003-6900104.899095.40.8662.091.135.174450
Y5004-61000116.199095.50.8682.011.094.994500
Y4003-822028.273993.30.8052.131.174.712530
Y4004-825031.673993.30.8161.961.064.372600
Y4005-828035.573993.50.8112.061.164.622710
Y4501-831539.574094.20.8152.301.294.873450
Y4502-835544.474094.30.8162.281.314.953550
Y4503-840049.674094.50.8222.191.274.743670
Y4504-845055.674094.60.8242.181.294.743850
Y5001-850060.974194.60.8362.141.054.804250
Y5002-856067.874194.70.8392.091.024.704400
Y5003-863076.374194.80.8392.121.084.844550
Y5004-871085.374194.90.8452.011.044.654700

6KV Y系列（IP23）、YKS系列（IP44）

 

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		Mst
——
Mn		1st
——
In		重量
Weight
kg
Y4501-1022028.359092.80.8082.151.104.543060
Y4502-1025032.059092.90.8082.111.104.503100
Y4503-1028035.859093.20.8082.111.134.543300
Y4504-1031540.559093.30.8022.171.214.693450
Y4505-1035545.559093.40.8042.141.224.693550
Y5001-1040050.359293.80.8162.020.934.363850
Y5002-1045056.359293.90.8191.970.914.264000
Y5003-1050062.559294.00.8192.020.974.424200
Y5004-1056069.559294.20.8241.930.944.294350
Y5005-1063078.559294.30.8182.091.104.734600
Y4504-1222030.949392.40.7412.141.204.343330
Y4505-1225034.549392.70.7522.011.124.143500
Y5001-1228037.449493.20.7732.060.994.294000
Y5002-1231541.649493.30.7821.920.904.104200
Y5003-1235548.249493.50.7582.281.204.814450
Y5004-1240053.849493.90.7632.211.114.604600
Y5005-1245060.749494.00.7692.291.214.844740

主要技術數據

6KV YR系列（IP23）、YRKS系列（IP44）

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		轉子電壓
Rotor voltage
V		轉子電流
Rotor Current A		重量
Weight
kg
YR3551-422025.8147693.50.8782.593084372500
YR3552-425029.5147693.50.8722.403294652590
YR3553-428032.4147693.70.8882.353564832650
YR4001-431536.9147893.80.8762.593555412800
YR4002-435541.3147893.90.8802.513855622860
YR4003-440046.6147894.10.8792.514205802940
YR4004-445051.8147894.30.8872.494635923020
YR4005-450057.0147894.50.8932.515165913120
YR4501-456063.7148394.90.8912.585306403350
YR4502-463071.6148395.10.8912.585806573590
YR4503-471080.5148395.20.8922.506196943990
YR4504-480089.9148395.30.8982.376647304090
YR5001-4900100.4148595.60.9033.0510355214640
YR5002-41000111.4148595.50.9042.8910835544790
YR5003-41120124.0148595.70.9092.8311755734890
YR5004-41250137.6148595.80.9122.8212835855090
YR4001-622027.298393.90.8302.583124262760
YR4002-625030.498393.80.8452.253124892760
YR4003-628033.798393.90.8522.173375082840
YR4004-631538.698393.90.8471.953655322910
YR4005-635543.298394.10.8411.923985503040
YR4501-640047.898594.10.8571.993886333770
YR4502-645054.298594.20.8482.074264263890
YR4503-650059.698694.50.8542.104754754290
YR4504-656066.798794.70.8532.195455454390
YR5001-663073.398894.80.8742.819249244440
YR5002-671082.598895.00.8712.739849844590
YR5003-680092.898895.20.8712.74110211024740
YR5004-6900103.798895.30.8762.62118711874790
YR4003-822028.873492.40.8001.952924662820
YR4004-825028.873492.50.8031.843124992890
YR4005-828036.273492.60.8041.803345243000
YR4501-831540.073993.80.8082.133625283740
YR4502-83554573994.00.8092.123925493840
YR4503-840050.273994.20.8152.044285673960
YR4504-845056.373994.30.8162.034715794140
YR5001-850061.273894.10.8352.247254154540
YR5002-856068.173994.20.8402.227984234690
YR5003-863076.773994.40.8382.248884274840
YR5004-871085.373994.40.8492.049414574990

6KV YR系列（IP23）、YRKS系列（IP44）

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		轉子電壓
Rotor voltage
V		轉子電流
Rotor Current A		重量
Weight
kg
YR4501-1022028.558892.30.8042.185412483350
YR4502-1025032.458892.40.8032.145832623390
YR4503-1028036.258892.70.8032.156312703590
YR4504-1031541.158892.90.7942.206872773740
YR4505-1035546.058893.10.7972.187562843840
YR5001-, 1040050.458993.40.8172.237223344140
YR5002-1045056.058993.60.8262.167953424290
YR5003-1050062.358993.70.8242.218843414490
YR5004-1056069.959093.90.8202.339553374640
YR4504-1222031.249091.80.7392.135132603590
YR4505-1225036.649091.90.7202.265792593790
YR5001-1228037.549092.50.7782.195403134290
YR5002-1231541.549092.70.7882.055863264490
YR5003-1235548.249293.10.7612.447023024740
YR5004-1240053.849293.40.7662.367793054890

主要技術數據

6KV YKK系列

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		Mst
——
Mn		1st
——
In		重量
Weight
kg
YKK3551-418522.6148092.80.851.80.86.52500
YKK3552-420024.4148092.90.851.80.86.52550
YKK3553-422026.8148093.00.851.80.86.52600
YKK3554-425030.4148093.10.851.80.86.52650
YKK4002-428033.6148593.20.861.80.86.52700
YKK4003-431537.8148593.30.861.80.86.52800
YKK4004-435542.5148593.50.861.80.86.52900
YKK4005-440047.8148593.70.861.80.86.53000
YKK4006-445053.6148593.90.861.80.86.53080
YKK4502-450059.5148594.00.861.80.86.54400
YKK4503-456066.5148594.20.861.80.86.54560
YKK4504-463074.7148594.40.861.80.86.54720
YKK4505-471084.0148594.60.861.80.86.54900
YKK5001-480093.3148594.80.871.80.86.55640
YKK5002-4900104.9148594.90.871.80.86.55720
YKK5003-41000116.4148595.00.871.80.86.55850
YKK5004-41120130.3148595.10.871.80.86.56050
YKK4001-618523.598592.40.821.80.86.02600
YKK4002-620025.398592.60.821.80.86.02670
YKK4003-622027.898592.80.821.80.86.02720
YKK4004-625031.598593.00.821.80.86.02760
YKK4005-628035.298593.30.821.80.86.02900
YKK4006-631539.598593.50.821.80.86.03030
YKK4502-635543.998593.70.831.80.86.04380
YKK4503-635543.998593.70.831.80.86.04550
YKK4504-645055.498594.10.831.80.86.04700
YKK4505-650061.598594.30.831.80.86.04820
YKK5001-656061.599594.40.841.80.86.05370
YKK5002-663076.499594.50.841.80.86.05450
YKK5003-671085.899594.80.841.80.86.05700
YKK5004-680096.699594.90.841.80.86.05880
YKK4004-818524.774092.50.781.80.85.52800
YKK4005-820026.674092.70.781.80.85.52860
YKK4006-822029.274092.90.781.80.85.52950
YKK4502-825032.774093.00.791.80.85.54550
YKK4503-828036.674093.20.791.80.85.54650
YKK4504-831541.174093.40.791.80.85.54750
YKK4505-835546.274093.50.791.80.85.54850
YKK5001-840051.374093.70.801.80.85.55050
YKK5002-845057.774093.80.801.80.85.55250
YKK5003-850063.874094.20.801.80.85.55400
YKK5004-856071.474094.40.801.80.85.55650

6KV YKK系列

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		Mst
——
Mn		1st
——
In		重量
Weight
kg
YKK4501-1018525.959091.70.751.80.85.54600
YKK4502-1020027.959091.90.751.80.85.54700
YKK4503-1022030.659092.10.751.80.85.54810
YKK4504-1025034.859092.30.751.80.85.54920
YKK4505-1028038.859092.50.751.80.85.55030
YKK5001-1031543.059092.80.761.80.85.55200
YKK5002-1035548.359093.00.761.80.85.55380
YKK5003-1040054.359093.30.761.80.85.55550
YKK5004-1045061.059093.40.761.80.85.55780
YKK4504-1218527.749091.80.701.80.85.54750
YKK4505-1220029.949092.00.701.80.85.54950
YKK5001-1222031.949092.20.721.80.85.55100
YKK5002-1225036.149092.50.721.80.85.55350
YKK5003-1228040.449092.70.721.80.85.55440
YKK5004-1231545.449092.80.721.80.85.55690

主要技術數據

10KV Y系列(IP23)、YKS系列（IP44）

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		Mst
——
Mn		1st
——
In		重量
Weight
kg
Y4001-422016.1148592.00.861.80.87.02560
Y4002-425018.2148592.20.861.80.87.02620
Y4003-428020.3148592.50.861.80.87.02750
Y450S-431522.7148593.00.861.80.87.03100
Y4501-435525.5148593.30.861.80.87.03280
Y4502-440028.7148593.50.861.80.87.03320
Y4503-445032.1148593.90.861.80.87.03350
Y4504-450035.7148594.00.861.80.87.03390
Y4505-456039.9148594.20.861.80.87.03470
Y4506-463044.8148594.40.861.80.87.03600
Y5001-471049.6148595.00.871.80.87.04450
Y5002-480055.8148595.10.871.80.87.04600
Y5003-490062.0148595.20.881.80.87.04750
Y5004-4100068.8148595.30.881.80.87.04900
Y5005-4112077.0148595.40.881.80.87.05050
Y450S-622016.998891.50.821.80.86.02500
Y4501-625019.198892.00.821.80.86.02550
Y4502-628021.398892.50.821.80.86.02600
Y4503-631523.998892.80.821.80.86.02680
Y4504-635526.598893.10.831.80.86.02800
Y4505-640029.898893.30.831.80.86.02900
Y4506-645033.598893.50.831.80.86.03050
Y5001-650037.099093.90.831.80.86.04360
Y5002-656040.999094.10.841.80.86.04500
Y5003-663045.999094.40.841.80.86.04650
Y5004-671051.699094.60.841.80.86.04800
Y5005-680058.199094.70.841.80.86.04950
Y4503-822017.873992.50.771.80.86.02650
Y4504-825020.273992.60.771.80.86.02760
Y4505-828022.673992.70.771.80.86.02820
Y5001-831525.574092.80.771.80.86.03950
Y5002-835528.674093.10.771.80.86.04100
Y5003-840031.874093.20.781.80.86.04250
Y5004-845035.774093.40.781.80.86.04450
Y5005-850039.074093.80.791.80.86.04650
Y5006-856043.674093.90.791.80.86.04850
Y5001-1022018.659592.10.741.80.85.53500
Y5002-1025021.259592.20.741.80.85.53600
Y5003-1028023.659592.40.741.80.85.53700
Y5004-1031526.559592.60.741.80.85.54100
Y5005-1035529.459592.80.751.80.85.54210
Y5006-1040033.159593.00.751.80.85.54360
Y5002-1222018.949592.00.731.80.85.54100
Y5003-1225021.549592.10.731.80.85.54200
Y5004-1228024.049592.20.731.80.85.54300

10KV YKK系列

型號
Type		額定功率
Rated Power
kw		定子電流
Stator Current
A		轉速
Speed
r/min		效率
efficiency
%

功率因素
Power Factor
cosΦ

Mm
——
Mn		Mst
——
Mn		1st
——
In		重量
Weight
kg
YKK4501-422016.2148592.30.851.80.87.03300
YKK4502-425018.4148592.50.851.80.87.03400
YKK4503-428020.5148592.60.851.80.87.03500
YKK4504-431522.8148592.90.861.80.86.53620
YKK4505-435525.6148593.10.861.80.87.03740
YKK4506-440028.7148593.50.861.80.87.03850
YKK4507-445032.3148593.60.861.80.87.03900
YKK5001-450035.8148593.80.861.80.87.04500
YKK5002-456039.9148594.20.871.80.87.03470
YKK5003-463044.5148594.00.871.80.87.04950
YKK5004-471049.5148594.20.881.80.87.05110
YKK5005-480055.6148594.40.881.80.87.05290
YKK4501-620015.598092.00.811.80.86.53500
YKK4502-622017.098092.10.811.80.86.53500
YKK4503-625019.198092.30.821.80.86.53600
YKK4504-628021.198092.50.831.80.86.53700
YKK4505-631523.698092.70.831.80.86.53810
YKK4506-635526.698092.90.831.80.86.54000
YKK5001-640029.998093.10.831.80.86.54950
YKK5002-645033.298093.30.841.80.86.55100
YKK5003-650036.898093.50.841.80.86.55250
YKK5004-656041.198093.70.841.80.86.55400
YKK4503-818515.174091.60.771.80.85.53600
YKK4504-820016.374091.80.771.80.85.53700
YKK4505-822017.974092.00.771.80.85.53820
YKK5001-825020.374592.40.771.80.85.54550
YKK5002-828022.774592.60.771.80.85.54700
YKK5003-831525.174592.90.781.80.85.54860
YKK5004-835528.274593.10.781.80.85.55060
YKK5005-840031.374593.30.791.80.85.55270
YKK5001-1018516.359091.20.731.80.85.54550
YKK5002-1020017.159091.30.741.80.85.54680
YKK5003-1022018.559091.40.751.80.85.54750
YKK5004-1025020.759091.60.761.80.85.54900
YKK5005-1028023.259091.80.761.80.85.55050
YKK5006-1031526.059092.00.781.80.85.55260
YKK5003-1220017.749090.80.721.80.85.54750
YKK5004-1222019.449091.00.721.80.85.54950

 

外形及安裝尺寸圖

6KV, Y(IP23), YR(IP23), YKS(IP44)安裝尺寸及外形尺寸

留言框

  • 產品：

  • 您的單位：

  • 您的姓名：

  • 聯系電話：

  • 常用郵箱：

  • 省份：

  • 詳細地址：

  • 補充說明：

  • 驗證碼：

    請輸入計算結果（填寫阿拉伯數字），如：三加四=7

產品目錄

Product Category