例句與造句

1. technical specifications for valves for shipboard use-part 6 : hand operated gate valves
   船用閥門技術(shù)規(guī)范.第6部分:手動(dòng)停止閥
2. optimization on installment engineering of the operating gate of bottom hole sluice flood in the three gorges hydroelectric station
   三峽水電站泄洪底孔工作門的安裝施工
3. It's difficult to find operating gate in a sentence. 用operating gate造句挺難的