The two oscillator circuits down below are ideal for applying crystal oscillators in series or parallel manner: High-repetition-level and superior-ability picosecond regenerative amplifier based upon an individual bulk Nd:GdVO4 crystal 的很多特性，如温度稳定性，老化稳定性，等效电路参数，容性负载要求等，都与切割方式密切相关�?石英 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... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html