1·Sound example 6: Chords followed by bass notes with different longitudinal mode frequencies (six versions).
健全例如6：和弦其次是低音注意到不同纵模频率(6版)。
2·Based on analyzing common low noise and fast photodetectors, PIN photodiode is selected to detect He-Ne laser longitudinal mode pulse.
在分析常用低噪声快速光电探测器的基础上，选择pin光电二极管来探测氦氖激光纵模脉冲。
3·Under certain conditions, this method can measure the output linewidth of single longitudinal mode fiber laser.
在一定的条件下，该方法是可以对单纵模光纤激光器的输出线宽进行测量的。
4·Sound example 5: "Yankee Doodle" played on strings tuned to the same pitch (transverse frequency) but with different longitudinal mode frequencies (two versions in different keys).
健全例如5：“扬基歌”上播放字符串调整同一球场（横向频率），但不同的纵模频率（两个版本在不同的键）。
5·The principle of a frequency stabilizing unit and its power circuit for a double longitudinal mode laser are introduced.
介绍一种双纵模激光器的稳频装置原理及其电源电路。