The 2 oscillator circuits under are ideal for using crystal oscillators in collection or parallel method: Higher-repetition-level and substantial-electricity picosecond regenerative amplifier based upon 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 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 ... https://bookmarkpagerank.com/story18962458/the-2-minute-rule-for-bulk-crystal-oscillator