The two oscillator circuits underneath are ideal for working with crystal oscillators in series or parallel manner: Substantial-repetition-rate and large-electric power picosecond regenerative amplifier according to 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 large electric power passively manner-locked picosecond oscillat... https://thebookmarknight.com/story18943550/little-known-facts-about-bulk-crystal-oscillator