摘要
该钻机以机械传动为主,辅助动作采用液压操作,结构简单,造价低,操作方便、效果好。
The said rig is mainly driven mechanically and hydraulic operations are used as supplementary. Its structure is simple and the price is cheap. Easy for operation with good result.
出处
《工程勘察》
CSCD
北大核心
1990年第6期22-23,共2页
Geotechnical Investigation & Surveying
