The two oscillator circuits beneath are appropriate for applying crystal oscillators in series or parallel mode: Substantial-repetition-fee and significant-electric power picosecond regenerative amplifier dependant 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性，隔一定的距离重复出现，这种周期性规律是 A substantial energy passively manner-locked picosecond osc... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html