这两台起重机需要一个特殊框架固定一对对角延伸的外舷架，而不是（一般的）从卡车框架平直从伸出。
Both cranes need a special frame to hold a pair of outriggers that extend diagonally, instead of straight out from the truck frame.
这两台起重机需要一个特殊框架固定一对对角延伸的外舷架，而不是（一般的）从卡车框架平直从伸出。
Both cranes need a special frame to hold a pair of outriggers that extend diagonally, instead of straight out from the truck frame.
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