Key difference is the height of the arch.

关键区别是曲拱的高度。

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Height difference of cargo operation can be adjusted, facilitating operator's labor strength.

可调整货物作业时的高度差，操作人员的劳动强度。

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Height difference of cargo operation can be adjusted, facilitating operator's labor strength.

可调整货物作业时的高度差，操作人员的劳动强度。

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