Crystal oscillators are loosely divided via the frequency they operate at and whether or not they are fundamental oscillators—operate at the frequency marked to the can or at even multiples of that (overtone oscillators). Higher-repetition-rate and superior-electric power picosecond regenerative amplifier dependant on only one bulk Nd:GdVO4 crystal 中原子或分子的排列具有三维空间的周期... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html