The measurement system consists of a reflective grating, a laser diode, a PSD, two first surface mirrors, a PSD signal processing circuit, and a power supply etc.是什么意思_The measurement system consists of a reflective grating, a laser diode, a PSD, two first surface mirrors, a PSD signal processing circuit, and a power supply etc.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句