The 2 oscillator circuits below are suited to utilizing crystal oscillators in collection or parallel mode: Higher-repetition-amount and higher-electric power picosecond regenerative amplifier depending on 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 electric power passively manner-locked picosecond oscillator b... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html