研究结果表明，既考虑等强度条件又考虑可靠性要求，是使机械体积或重量达到最小的最有效的优化途径。
The results show that combinig equi strength conditions and reliability requirement together is one of the most efficient methods that can minimize the volume or weight of the mechanism.
同时给出了当构件跨度不满足最小跨度要求时受拉钢筋强度折减的计算方法。
Presents the strength reduction calculating method of the tension bar when the minimum span length is not sufficed.
大多数产品要求纤网内纤维的排列方向随机分布，即形成杂乱状态，所得产品各方向性能差异最小，主要性能指标强度差异即纵横向强度比要小。
So, beside the uniformity requirement, the web should have more fibers of random orientation which means the difference of breaking strength in length and breadth is small.
综合考虑规范对立管强度的要求，防止发生压溃和屈曲扩展的要求及限制立管发生漂浮的要求三个条件，确定了满足条件的最小壁厚。
Considering the requirements of riser strength, system collapse, propagated buckling and limitation of floating, the smallest thickness that meets the requirements is determined.
综合考虑规范对立管强度的要求，防止发生压溃和屈曲扩展的要求及限制立管发生漂浮的要求三个条件，确定了满足条件的最小壁厚。
Considering the requirements of riser strength, system collapse, propagated buckling and limitation of floating, the smallest thickness that meets the requirements is determined.
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