ultrasonic-wave grating超声波: ultrasonic; pretersonic; sup ...光栅: raster; optical grating; gra ...超声波光调制器: ultrasonic light modulator超声波光谱技术: ultrasonic spectroscopy technique超声波光线调节器: ulm ultrasonic light modulator下载手机词典可随时随地查词查翻译