常見例句雙語例句This paper introduces how to dismantle yarding tractor loading board, install trestle pole and use tightwire and chain wheel to load and unload cargo.本文介紹如何拆下集材拖拉機(jī)搭載板，安裝架桿，利用絞盤機(jī)、鋼索及架桿滑輪裝卸貨物。 返回 trestle board