单词	happen spontaneously
释义	happen spontaneously 自发
随便看	electron-optical, ion-optical electron-optical, ion-optical, arrangement electron optical light amplifier electron optical magnification electron optical magnifying power electron-optical phenomenon Electron optical power supply electron optical prism electron-optical properties electron optical shutter electron-optical shutter electron optical system electron-optical system electron optical system of EPMA electronoptical transducer electron-optical transistor electron optices electron optics electron pair acceptorEPA electron pair approximation electron pair bond electron-optics electron optics column electron optics component electron opticss