Crystal oscillators are loosely divided because of the frequency they operate at and whether they are essential oscillators—perform in the frequency marked around the can or at even multiples of that (overtone oscillators). Significant-repetition-fee and large-electrical power picosecond regenerative amplifier based on an individual bulk Nd:GdVO4 crystal 中原子或分子的排列具有三维空间... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html