The 2 oscillator circuits below are appropriate for making use of crystal oscillators in collection or parallel manner: High-repetition-fee and significant-electric power 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 A higher ability passively method-locked picosecond os... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html