The 2 oscillator circuits beneath are suitable for working with crystal oscillators in series or parallel manner: Significant-repetition-fee and higher-electric power picosecond regenerative amplifier depending on just 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，... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html