The 2 oscillator circuits under are suited to using crystal oscillators in sequence or parallel manner: Superior-repetition-fee and high-electric power picosecond regenerative amplifier depending on an individual bulk Nd:GdVO4 crystal PDF Layout of resonators to the dedication from the temperature coefficients of elastic constants of monocrystalline silicon 这个平时使用的时候也叫做晶... https://www.hxcrystals.com/seokeywords/bulk-crystal-oscillator.html