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- The change of the moment of momentum of a system of particles with respect to the center of mass only involves the external forces acting on the system, not the internal forces. 质点系相对于质心和固定点的动量矩定理，具有完全相似的数学形式，而对于质心以外的其它动点，一般并不存在这种简单的关系。
- It can be used to measure different kinds of the ammunition parameters,such as the center of mass,the centroidal deviation,the moment of inertia,the product of inertia,the dynamic unbalance and etc. 可以用来测量质心位置、质偏、转动惯量、惯性积、动不平衡度等多种参数,同时推导了相应的计算公式,并利用样机进行了实际测量,测量结果表明该方法是有效和可行的,且具有快速、高效、高精度等特点。
- A metric unit of mass equal to 100 grams. 百克公制质量单位，等于100克。
- After a moment of cranking the motor finally kicked over. 用手柄摇了一阵后，马达终于发动起来了。
- When heavy atoms are split in this way some loss of mass occurs. 当重原子这样被分裂的时候，就会发生质量的减少。
- She's always to the fore at moments of crisis. 她在危急关头总是挺身而出。
- "What else do you see?" asked the captain after a moment of silence. "你还看见什么？"上尉沉默了片刻后又问。
- Shrapnel is a weapon of mass destruction. 子母弹是一种大规模杀伤性武器。
- He did a foolish thing in a moment of anger. 他在生气时做了一件愚蠢的事情。
- Her death was the occasion of mass riots. 她的逝世引发了大规模的骚乱。
- The moment of inertia is not a simple concept. 转动惯量不是一个简单的概念。
- Saddam had weapons of mass destruction! 萨达姆有大杀伤性武器。
- He talked to the press in a moment of indiscretion. 他一时冲动对新闻界发表了讲话。
- The Explosion of Mass Advertising and Marketing? 大众广告和市场运做?
- But it was only a brief moment of uncertainty. 结果，那也仅是数分钟的迟疑。
- The diameter of mass often exceeded 5 cm. 病变直径大于5cm 者多;
- He drove away his wife in a moment of anger. 他一气之下将妻子赶出家门。
- Crushing and finishing granule of mass material. 团块物料的粉碎、整粒。
- It is a kind of moment of privacy that they need. 她们需要一点“隐私”的时间。
- Processing techniques of mass monitored data. 海量监控数据的处理技术。
