The deformations of the element in the middle surface of the shell and its rotation about all axes are considered in the derivation of these equations.

在推导过程中，考虑了壳体微元在中面内的变形和绕各个轴的转动。

youdao

At the middle-management level, a crippling contradiction tends to surface.

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On the surface, he appeared content with life in the middle of nowhere and was focused on the fight at the weekend.

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In coordinated groups, the animals first cornered and then herded a massive school of herring, blowing bubbles around them to confuse the fish and make them swim tighter, until, surging through the middle of the school with mouths agape, the humpbacks boiled to the surface in a feeding frenzy.

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