duplexern.双工机(天线共用器；天线转换开关)duplexn.双层公寓；联式房屋adj.双倍的；复式的；[计] 双方的duplex radio telegraphy双工无线电报duplex telegraph system双工电报制duplex steam piston pump双缸蒸汽活塞泵Duplex Frequency Hopping化学杀虫剂与杀菌剂duplex tandem compressor双并双串压气机Duplex surface treatment复合镀渗duplex Shreiner calender双层电光机duplex receptacle outlet双孔插座出线口duplex telegraph circuit双工电报电路duplex date transmission双日期传输

1. Install a ground cable on the triplex pump motor.
   给三抽缸泵马达安装接地线。
2. Centrifugal pumps are the most common pump power.
   离心泵是最常见的动力式泵。
3. The Company produced all kinds of vehicles pump-pump, pump Tuobeng tubes, and other parts, construction machinery and equipment leasing.
   本公司生产各种车式泵泵管，拖泵泵管，及其他零部件，并可租赁建筑机械设备。