Let the center of the global coordinates be chosen at the center of the shaft.
将总坐标的中心选于升降机井的中心处。
hoistway-door combination mechanical lock and electric contact
(升降)机井门机电联锁触点
The miners are lowered into the mine by means of an elevator known as a cage. In the same shaft there is often a hoist, a bucketlike elevator used to raise mined ore from lower levels.
矿工借助于叫作罐笼的升降机下井。井筒里通常还安装有绞车，一种用来提升矿石的斗式升降机。
dig a pit, tunnel, shaft, etc
挖坑、 隧道、 升降井等.
proximity protection device
防夹装置〔升降机〕
audible and visual signal [lift]
视听信号〔升降机〕
Concret was raised by a hoist.
混凝土由升降机提升。
A: A total of four elevators for passengers and another two for loading goods.
共四部客用升降机和两部载货升降机.
lift for passengers or goods (excl. continuous-action lifts)
人员或货物升降机（连续式升降机除外）
hydraulic elevator
液压电梯;液压升降机;水力提升机;水压升降机
The lift grinds in the shaft.
电梯在升降井里嘎嘎响着。
Wellbore dynamic surge pressure while tripping a drill pipe in slim hole drilling
小井眼钻具升降产生的孔内波动压力
Jack-up system on 931 offshore drilling platform
海洋石油931钻井平台升降系统的分析
elevating grader
起土平路机;平土升送机;升降平路机;升降式平路机;升运平路机
To raise or lower(the boom of a crane or derrick.
升降使起重机的吊臂上升或下降
elevator ,finger-tray, for sacks, barrels, bales of straw, sheaves
指状盘架升降机,用于升降袋、桶、草烟
jib adjusting gear
起重机悬臂升降机构
chain, scraper, for elevators or conveyors
升降机或输送机链板