Crystal oscillators are loosely divided from the frequency they work at and whether they are fundamental oscillators—work for the frequency marked about the can or at even multiples of that (overtone oscillators). Superior-repetition-fee and high-electric power picosecond regenerative amplifier determined by just one bulk Nd:GdVO4 crystal PDF 中原子或分子的排列具有三维空间的周期性，隔... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html