起重机装载和模拟的三维模型起重机装卸。

Simulate crane loading and unloading with 3d crane model.

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该电缆盘车不需起重机装卸，用人力就可以很方便地装卸电缆盘。

The trailer for cable drum can be conveniently used for loading and unloading cable drums by manpower without the need of a crane for loading and unloading.

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臂架型起重机：可在圆形场地及其上空作业，多用于露天装卸及安装等工作。

Jib crane: in circles over the operation site and more for open-air handling and installation work.

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