并且，在星系的红色旋臂和旋臂间螺旋状的轮辐中可以看到被新生恒星加热的尘埃。

And, the galaxy's red spiral arms and the swirling spokes seen between the arms show dust heated by newborn stars.

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庭院的高墙和较高的温度导致这架黑鹰在其自身的旋翼洗流中下坠。旋翼洗流是一种“具有动力的下坠”，这是种很危险的空气动力学状态。

The high walls of the compound and the warm temperatures had caused the Black Hawk to descend inside its own rotor wash-a hazardous aerodynamic situation known as "settling with power."

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因此，它们在性质上的唯一区别应该可通过观测两种香芹酮的气味和旋光仪中旋光度的符号而得知。

Hence, the only difference in properties one should observe for the two carvones are the odors and the signs of rotation in a polarimeter.

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And this spin magnetic quantum number we abbreviate as m sub s, so that's to differentiate from m sub l.

这个自旋磁量子数我们把它简写成ｍ下标ｓ,以和ｍ小标ｌ有所区分。

麻省理工公开课 - 化学原理课程节选

And several years later these two graduate students at Leiden by the name of Goudsmit and Uhlenbeck proposed that the electron in fact spins.

几年之后,两个莱顿的学生,古德米斯特和乌伦贝克,提出电子其实是在自旋的。

麻省理工公开课 - 固态化学导论课程节选

It doesn't simply orbit the nucleus, but as it orbits it spins.

它并不只是简单地绕原子核旋转，而是同时进行公转和自旋。

麻省理工公开课 - 固态化学导论课程节选