The two oscillator circuits under are suited to using crystal oscillators in series or parallel method: Substantial-repetition-amount and significant-ability 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 higher ability passively method-locked picosecond oscillator based on ... https://bookmarks-hit.com/story19857352/how-bulk-crystal-oscillator-can-save-you-time-stress-and-money