The 2 oscillator circuits under are suitable for employing crystal oscillators in series or parallel method: Substantial-repetition-level and large-electric power picosecond regenerative amplifier according to an individual 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 A substantial electric power passively manner-locked picosecon... https://highkeysocial.com/story4443497/bulk-crystal-oscillator-can-be-fun-for-anyone