这种升降台有价值的特点是可以在地面也可以在吊台上操纵。

Valuable features of the elevating platforms include controls which can be operated either from the ground or the bucket.

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比如，你可以制作一扇逼真的门或者是一台有摆动链条的吊机。

For example, you could make a physical door or a crane with a swinging chain.

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单台轨迹吊对应的集装箱密度较大，堆高也较高，需求较高的办理水平，以避免频频翻箱。

For a single track lift, the container density is large, the pile height is higher, thus a higher handing level without turning over is needed.

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