lifting rig

常见例句

The tubing string lifting velocity of the conventional mechanic rig under each particular gear is constant.
常规机械式修井机每一档下的管柱起升速度为常量。
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.
应用模态分析技术、振型截断法，对专利证书号第352466号的ZJ50J双升式机械驱动石油钻机振动特性进行研究。
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.
顺穿法一般在电动钻机上采用，主要考虑到电控操作提升系统比较平稳；花穿法一般在机械钻机上使用，以受力平衡来缓解气控操作带来的冲击载荷的影响。