The 2 oscillator circuits below are ideal for working with crystal oscillators in collection or parallel mode: Large-repetition-amount and high-electric power picosecond regenerative amplifier determined by a single 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... https://listbell.com/story8685640/a-secret-weapon-for-bulk-crystal-oscillator