Feed the new drilling line (fast line) through the side of the drawworks drum.
把快绳头穿过绞车辊筒的一边。
On either side you'll see a drum tower or a bell tower.
你可以看到鼓楼和钟楼，一边一座。
The skin on one side of the drum is thick made from goatskin;
双面鼓的一面较厚，以山羊皮制成；
The skin on one side of the drum is thick made from goatskin;
双面鼓的一面较厚，以山羊皮制成；
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