The 2 oscillator circuits beneath are well suited for making use of crystal oscillators in collection or parallel mode: Superior-repetition-price and significant-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 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... https://bookmarkinglife.com/story4485827/little-known-facts-about-bulk-crystal-oscillator