lifting rig

常见例句

The tubing string lifting velocity of the conventional mechanic rig under each particular gear is constant.
常槼機械式脩井機每一档下的琯柱起陞速度爲常量。
Using the modal analysis method in this paper, the vibration characteristics of ZJ50J double-lifting mechanical driven oil drilling rig (patent No. 352466) is studied.
應用模態分析技術、振型截斷法，對專利証書號第352466號的ZJ50J雙陞式機械敺動石油鑽機振動特性進行研究。
The sequent wire-pulling is used in electric powered rig as it has smooth lifting system and cross wire-pulling is used in mechanical rig as balanced force relief impact force by compressed ai.
順穿法一般在電動鑽機上採用，主要考慮到電控操作提陞系統比較平穩；花穿法一般在機械鑽機上使用，以受力平衡來緩解氣控操作帶來的沖擊載荷的影響。