The objective of this paper is to study the effects of three dimensional constraints on fatigue crack growth under aircraft spectrum loading.
研究裂纹端部三维应力约束、塑性约束和位移约束等对谱载疲劳裂纹扩展的影响。
In three-dimensional computer animation we can use software constraints to force all or some of the motion within arcs.
在三维立体电脑动画，我们可以使用软件的限制，迫使全部或部分的议案，内弧。
Air route planning is a three-dimensional planning problem, with wide range, many objects and many constraints.
飞行航路规划是一个大范围多目标多约束的三维规划问题。
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