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关注：1
2013-05-23 12:21
求翻译：approach the truss is examined to determine whether the force in a member is tensile or compressive. For some members this is straightforward. For example, in Fig. 4.14, the vertical reaction at A, RA, can only be equilibrated by the vertical component of the force in AB which must th是什么意思？ 待解决
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approach the truss is examined to determine whether the force in a member is tensile or compressive. For some members this is straightforward. For example, in Fig. 4.14, the vertical reaction at A, RA, can only be equilibrated by the vertical component of the force in AB which must th
问题补充： |
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2013-05-23 12:21:38
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2013-05-23 12:23:18
办法是审查的桁架在一个部队的,以确定是否是拉伸或压缩。 对于一些本局议员是非常简单的。 例如,在无花果。
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2013-05-23 12:24:58
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2013-05-23 12:26:38
桁架的方法被检查以确定是否在成员力是拉或压。对于一些成员，这很简单。例如，4.14 图，在垂直的反应时 A、 RA，可以只平衡由垂直力的因此必须向下行事的 AB 组件：，该值指示该成员是在压缩 （成员中的压缩力会将推向一个联合而将拉伸力将从拉出一个联合）。在某些情况下，%
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2013-05-23 12:28:18
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