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1·The truss comprises four plane trusses each two panels and each panel has one diagonal brace.

桁架由四个平面桁架组成，每两个节间及每个节间均有对角撑。

2·The truss comprises four plane trusses each two panels and each panel has one diagonal brace .

桁架由四个平面桁架组成，每两个节间及每个节间均有对角撑。

3·Because the diagonal outriggers brace the crane not only against side-to-side forces, but also front-to-back turning forces, these two cranes can lift the full rated load over a wider Angle.

由于对角舷外架不仅支撑起重机抵抗侧向力，而且也包括交变的前后力，这两台起重机可以在一个更宽的角幅度之上举起额定的负荷。