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Thinkphp入门三—框架模板变量47 ... egt：great equal 大于等于 heq：heng equal 恒等于 nheq：not heng equal 不恒等于 ...
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双语例句原声例句
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于是，在采用了线性形状函数来表达的位移分量以后，应力分量对运动方程的贡献必恒等于零。
Thus, if we use such form functions to represent the displacement components, the effect of internal stresses to the equations of motion vanishes identically.
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But since sine square plus cosine square is 1, you'll find this vector has a fixed length R.
但是由于正弦和余弦的平方和为1,你会发现这个矢量模长恒等于 R
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