The two oscillator circuits down below are appropriate for using crystal oscillators in sequence or parallel manner: Superior-repetition-price and substantial-power picosecond regenerative amplifier depending 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 large electricity passively manner-locked picosecond oscillator... https://bookmarkextent.com/story20636776/the-single-best-strategy-to-use-for-bulk-crystal-oscillator