... 向下抽芽孔downwardthreadedhole 半剪half-shear 向上反折压平upwardfoldingandflattening ...
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half shear angle 半切变角
downward half-shear 向下半剪
half shear 半剪切 ; 半剪
upward half-shear 向上半剪
Normally the shear velocity is about half of the compressional velocity.
一般地说横波速度大约是纵波速度的一半。
youdao
Sometimes it is better to locate the force half-way between the centroid and the shear centre.
有时，荷载作用在形心与剪心距离的一半处较为有利。
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