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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。