Crystal oscillators are loosely divided through the frequency they function at and whether they are fundamental oscillators—do the job for the frequency marked to the can or at even multiples of that (overtone oscillators). Superior-repetition-price and substantial-power picosecond regenerative amplifier depending 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