常見例句雙語例句Pneumatic crawler drill rig is a kind of rock drilling equipment in construction.氣動履帶式鑽車是一種工程用鑿巖鑽孔設(shè)備。Crawler hydraulic drill, and USES the new type of hydraulic technology, low gas consumption, rotary torque, move the hole deflection is convenient.履帶式液壓鑽機，採用新型液壓技術(shù)，耗氣量低，廻轉(zhuǎn)扭矩大，移孔變位方便。There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.鏇挖鑽機履帶式行走裝置支重輪之間的距離及其數(shù)量的多少，尚缺少系統(tǒng)的計算公式。 返回 crawler drill