常見例句雙語例句After unit shaft sealing was reformed into spiral dynamic pump sealing in Nanyaheand Gengda hydropower stations, operation defect which existed for many years is disappeared.南椏河和耿達(dá)水電站機(jī)組主軸密封改造為螺旋動(dòng)力泵式主軸密封后,解決了多年存在的運(yùn)行缺陷。Long spiral hole pump pressure CFG(Cement Flyash Gravel) pile construction technology has such advantages as small noise, quick construction rate and low construction price.長螺旋鉆孔管內(nèi)泵壓CFG樁成樁混合材料施工方法,具有施工噪音低,成樁速度快,工程造價(jià)較低等特點(diǎn)。After unit shaft sealing was reformed into spiral dynamic pump sealing in Nanyaheand Gengda hydropower stations, operation defect which existed for many y…南椏河和耿達(dá)水電站機(jī)組主軸密封改造為螺旋動(dòng)力泵式主軸密封后,解決了多年存在的運(yùn)行缺陷。 返回 spiral pump