To control the tray down a steady pace to avoid collision, in the drum line at intervals of a certain distance from one set of damping system.

为控制托盘以稳定速度下滑，避免撞击，在滚筒线上每隔一定距离设置一套阻尼系统。

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Drum line at a certain Angle of inclination fixed to the shelf beam, the tray from the high-placed, along the drum line from their own gravity down.

滚筒线按一定角度倾斜固定在货架横梁上，托盘从高端放入，沿滚筒线靠本身重力下滑。

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Install newly cut fast line into the drawworks drum and fasten the clamp with the torque wrench.

把刚割断的快绳头装到绞车辊筒内，用扭矩扳手上紧活绳头卡子。

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Taron Green was on the verge of joining a gang before he became a member of the drum line.

CNN: Drill team keeps kids off deadly streets