The 2 oscillator circuits under are appropriate for employing crystal oscillators in sequence or parallel method: Significant-repetition-charge and high-electricity picosecond regenerative amplifier according to only one 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，隔一定的距离重复出现，这... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html