The two oscillator circuits underneath are ideal for applying crystal oscillators in sequence or parallel manner: Significant-repetition-fee and substantial-electricity picosecond regenerative amplifier determined by an individual 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 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... https://pr8bookmarks.com/story19033311/helping-the-others-realize-the-advantages-of-bulk-crystal-oscillator