The two oscillator circuits under are suitable for employing crystal oscillators in series or parallel method: Large-repetition-amount and higher-electricity picosecond regenerative amplifier based 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 A large electricity passively manner-locked picosecond oscillator dependant ... https://bookmarkangaroo.com/story19063911/bulk-crystal-oscillator-can-be-fun-for-anyone