甚至在19世纪60年代，就已经有了一个相当广泛的元素谱线模式库。

There was a pretty extensive library of spectral line patterns of elements even by the 1860s.

youdao

比如，可能会让我们决定有哪些不同的元素可以产生一个有五条不同的谱线的光谱？

We might be asked, for example, to determine what different elements could produce a spectrum that gave 5 different lines.

youdao

每一种样式代表一种不同的化学元素，所以光谱线的不同集合或模式意味着这颗恒星有不同的化学成分。

Each pattern stands for a distinct chemical element, and so different sets or patterns of spectral lines mean that the star has a different chemical composition.

youdao

We might be asked, for example, to determine what all of the different elements could be that would produce a spectrum that gave us 5 different lines.

那么我们会问，比如，有哪些不同的元素可以产生,一个有五条分立谱线的光谱？

麻省理工公开课 - 化学原理课程节选

Any one of these different elements could actually produce a photoelectron spectroscopy spectrum that has five distinct lines.

其中任何一种元素,都可能产生,有五条分立谱线的光电子能谱。

麻省理工公开课 - 化学原理课程节选

See, trim lines, blue and gold, and it has elements on it.

看，蓝金色相间的边角线也很整齐，里面肯定是含一些元素的。

麻省理工公开课 - 固态化学导论课程节选