line string up
... 滑车系绳 dog strop 滑车穿绳 line string up ; string the block 滑车装绳 reeving ; line reeving ...
基于46个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
位于重型井架或桅架式井架顶部的固定的滑轮组（称之为滑车轮槽轮），通过该滑轮组钻井钢丝绳进行穿绳。
The fixed set of pulleys (called sheaves) located at the top of the derrick or mast, over which the drilling line is threaded.
youdao
应用推荐
模块上移
模块下移
不移动