錘狀指 的英文怎麼說
中文拼音 [chuízhuàngzhǐ]
錘狀指
英文
hammer finger-
The local directional drilling is just staring in terrane, the equipments and the technologies ca n ' t satisfy far and far the spot construction needs, according to current circumstance and considing the existed equipments, the author put forward drilling by air hammer in terrane, having designed compounded - drilling tools, and recommended technology parameters. producing experiments have obtained good achievements in economic and in techniques
國內定向鉆進鋪管技術在巖層只是剛剛起步,設備、工藝遠遠不能滿足現場施工需要,本文針對國內、外巖層定向鉆進非開挖設備及工藝現狀,結合國內大多施工單位的已有設備,提出巖層空氣潛孔錘導向鉆進工法,設計了適合巖層鉆進的實用鉆具,並提出具有針對性的工藝參數,生產性試驗取得了良好的經濟技術指標。
分享友人