“基频”造句

硝酸离子有四个基频形式.
The nitrate ion has four fundamental modes of vibration.

对于基频振动来说, B ′-B″ 很小,因此谱线是几乎等距离的.
For the fundamentals , B'- B " is very small and therefore the lines are almost equidistant.

主要研究音节基频包络的聚类问题.
In this paper, the clustering problem of syllable pitch contours is studied.