2025-09-06 14:11 浏览次数 6
(后)拉线;支撑
When the mast are ready to be laid down, release the front guy lines and the back guy lines, then disconnect the mast from A-frame.
具备下放井架条件后,依次拆除井架前绷绳、后绷绳和井架与人字架的连接固定装置。