The 2 oscillator circuits below are appropriate for using crystal oscillators in sequence or parallel mode: Significant-repetition-price 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 substantial electric power passively manner-locked picosecond oscill... https://hubwebsites.com/story20271085/the-smart-trick-of-bulk-crystal-oscillator-that-no-one-is-discussing