So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

The second I walked in, a wave hit me,

我进去的那一瞬就感受到了一股热浪，

哥伦比亚的氛围 - SpeakingMax英语口语达人

The second thing is, just as in the case of the violin string, the wave equation, as posed by Schrodinger, has a plurality of solutions.

第二，就那个小提琴弦而言，波动方程，被薛定谔所提出的，有许多解法。

麻省理工公开课 - 固态化学导论课程节选

The second, the abolition of the family, and the third wave being the establishment of the philosopher kings.

第二波，不要家庭；,第三波,设立哲学家国王。

耶鲁公开课 - 政治哲学导论课程节选

Similarly, with the second hydrogen atom, we've got the nucleus in the middle, and the 1 s b wave function around it.

类似的，在第二个氢原子里面，我们在中间有原子核，周围有1sb波函数。

麻省理工公开课 - 化学原理课程节选

And when we describe this in terms of talking about chemistry terminology, we would call the first one the 1 s, and 1 is in parentheses because we're talking about the first electron there, and we would multiply it by the wave function for the second one, which is also 1 s, but now we are talking about that second electron.

当我们用化学术语来,描述它的时候，我们称第一个为“1s“,括号中的1是因为我们,在谈论第一个电子,而且我们会用它的波函数，乘以第二个,第二个也是“1s“,但是我们现在谈论的是,第二个电子。

麻省理工公开课 - 化学原理课程节选