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。
Half tube type: when the medium containing solid particles or fibrous material, can choose a half tube type structure, this structure has the clean and shear function.
半筒型：当介质中含有固体棵粒或纤维状物质时，可选用半筒型结构，此种结构具有自洁及剪切功能。
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。
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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