The two oscillator circuits underneath are appropriate for employing crystal oscillators in collection or parallel manner: Superior-repetition-level and substantial-electrical power picosecond regenerative amplifier depending on a single bulk Nd:GdVO4 crystal 中原子或分子的排列具有三维空间的周期性，隔一定的距离重复出现，这种周期性规律是 中原子或分子的排列具有三维空间的周期性，隔一定的... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html