frequency lock锁频frequencyn.频繁；频率Frequency Modulation Frequency Modulation调频-调频frequency shift voice frequency telegraph移频音频电报Frequency stabilized carbon dioxide laser稳频二氧化碳激光器frequency conversion / power frequency变频／工频Frequency of high-water and low-water丰枯频率frequency conversion speed adjusting pump变频调速水泵Frequency Differential Phase Shift Keying频率差分移相键控frequency conversion and speed regulation变频调速Frequency multiplication local oscillator倍频本地振荡器Frequency Assignment Management Equipment频率分配管理装置

1. The collimation and shaping of the optical systems in the semiconductor lasers are emphatically presented in this paper.
   本文重点介绍半导体激光器光学系统的准直及其整形。
2. The shaping step is especially designed to keep the sealing from breaking, so the sealing is flat and smooth.
   为了避免封口起皱，本机特设计整形工位，使封口平整无褶皱。