ratio arm box
... bridge ratio arm 电桥比率臂 ratio arm box 比例臂箱 Paul-type ratio arm 保罗式比例臂 ...
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箱形伸缩臂作为汽车起重机的主要受力构件,其重量一般占整机的13 ~ 20%,而大型起重机占的比例则更大。
As the main stress component, box truck crane telescopic boom usually accounts for the weight machine for 13 ~ 20%, while the percentage of large cranes is greater.
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