Crystal oscillators are loosely divided because of the frequency they function at and whether or not they are essential oscillators—operate in the frequency marked around the can or at even multiples of that (overtone oscillators). Modeling of nonlinear micromechanical resonators and their simulation Together with the harmonic‐equilibrium method PDF 中原子或分子的排列具有三维空间的周... https://thefairlist.com/story9020866/5-easy-facts-about-bulk-crystal-oscillator-described