汽车起重机是在通用或专用在载重汽车底盘上装上起重工作装置及设备的起重机，主要采用伸缩式臂架，油缸变幅。
Mobile crane is a general or special the heavy lifting the chassis on the work and equipment, cranes, retractable type mainly adopt the oil tank movement.
该产品是一种多用途的单作用伸缩式套简油缸组成的垂直升降机。
This product is a kind of vertical lifting device composed by multi-purpose single-function flexible cylinder.
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