the truck-mounted concrete pump
the truck-mounted concrete pump
车载混凝土泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Secondly, the constitution of the truck mounted concrete pump and the structural traits and machine characteristics of the boom system were introduced in detail.
然后详细的介绍了泵车的基本组成及臂架系统的结构特点和机构特性。
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