The two oscillator circuits below are suited to employing crystal oscillators in series or parallel manner: Large-repetition-rate and substantial-energy picosecond regenerative amplifier dependant on 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，隔一定的距离重复出现，这种周期性... https://bookmarksea.com/story18928009/the-2-minute-rule-for-bulk-crystal-oscillator