The structure, work principle and application of tubing telescopic unit is introduced.
简要介绍了管柱伸缩器的结构、工作原理及用途。
The MK is transported as a complete machine with telescopic tower, trolley jib, complete ballast, power generation unit and elevating cab.
MK可以在配备伸缩式塔架、小车副臂、完整配重、动力装置与高架司机室的情况下，以整车形式运输。
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