Toys with an end mass greater than 0.02 kg (0.04 lb) shall have cord length less than 50 cm (20 in. ) measured when rotating at 80 r/min.

末端质量大于0.02公斤（0.04磅）的玩具上的绳在以80转每分钟的速度旋转时长度应小于50厘米（20英寸）。

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The north end mass is comprised of the museums entrance, two exhibition Spaces, VIP lounge, as well as featuring a roof terrace looking out towards the cityscape.

北面的体量是博物馆的入口，两个展览空间，VIP休息室以及以外向的屋顶走廊为特征的城市景观。

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The bigger the mass at each end of the pole, the easier it is for the tightrope walker to maintain his or her balance.

钢丝两端的质量越大，走钢丝的人就越容易保持平衡。

youdao

And he found that the middle member of the triad had an atomic mass that was midway between the atomic masses of the end members.

他发现三元组中间的元素,的原子质量,是位于两端的元素的原子质量,的中间。

麻省理工公开课 - 固态化学导论课程节选

If you add all these up then you end up 011 with 12.011 as the atomic mass.

如果你将这些都加起来，你会得出,原子质量是12。

麻省理工公开课 - 固态化学导论课程节选

President Asif Ali Zardari has said the government wants to end the mass protest through negotiations, not force.

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We must again cast a critical eye toward EA, now caught doing something more questionable than screwing up the end of Mass Effect.

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