The two oscillator circuits under are suited to applying crystal oscillators in series or parallel mode: Modeling of nonlinear micromechanical resonators and their simulation with the harmonic‐equilibrium system The outcomes indicated that GaAs is really a promising passively Q-switched saturable absorber and continue to has likely to discover. 中原子或分子的排列具有三维空间的周期性，... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html