The 2 oscillator circuits beneath are well suited for employing crystal oscillators in collection or parallel method: Large-repetition-level and substantial-power picosecond regenerative amplifier determined by 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 significant energy passively method-locked picosecond oscillator... https://bookmarkfame.com/story18813066/rumored-buzz-on-bulk-crystal-oscillator