The two oscillator circuits under are suitable for employing crystal oscillators in series or parallel method: Higher-repetition-fee and high-electrical power picosecond regenerative amplifier dependant on just 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... https://throbsocial.com/story20838097/not-known-details-about-bulk-crystal-oscillator