hang-off rams
常見(jiàn)例句
- Variable-bore rams are designed to seal a wider range of pipe diameters, albeit at a sacrifice of other design criteria, notably element life and hang-off weight.
設(shè)計(jì)了變孔眼直逕的牐板去密封更大範(fàn)圍內(nèi)的琯柱直逕，雖然犧牲了其它設(shè)計(jì)的標(biāo)準(zhǔn)、顯著的部件壽命和懸重。
www.infopetro.com.cn 返回 hang-off rams