例句與造句

1. Seat rings ? separate heavy duty , full ported rings for easy maintenance
   閥座環(huán)-分離式重型、全流道(全端口)環(huán)，易于維護(hù)。
2. Seat rings ? heavy duty , full ported rings threaded into body for easy maintenance
   閥座環(huán)-重型、全流道(全端口)環(huán)螺紋裝配到閥體內(nèi)，易于維護(hù)。
3. It's difficult to find porting ring in a sentence. 用porting ring造句挺難的