Don't get things mixed up, just the z component of the force becomes Gm triple integral of delta cos phi sine phi d rho d phi d theta.

不要搞混，只是力的z分量罢了,它是Gm∫∫∫δcosφsinφdρdφdθ

youdao

A card is thought of (no force) and the deck is mixed, some CARDS face up and some CARDS face down.

卡片被重视(没有力量)，并且甲板是混杂的，一些拟订面朝上和有些卡片正面下来。

youdao

An expression of energy difference rate in a plate of non-uniform thickness with a crack of mixed mode under both body force and surface tractions in a non-uniform temperature field is derived.

本文推导出了含复合型裂纹的变厚度板在承受体力和面力、存在非均匀温度场的情况下的能量差率表达式。

youdao

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