光度计粉尘质量浓度测量法具有快速、简便和能够连续测定等特点，是目前广泛采用的一种粉尘质量浓度测量方法。
The dust mass concentration measurement based on photometer measurement is widely used nowadays because of its fast, simple and continuous working features.
光度计是专门用于测量发射，反射或透射光的光通量，亮度，照度或发光强度等。
Photometers are specifically designed to measure emitted, reflected or transmitted light in photometric terms of luminous flux, luminance, illuminance or luminous intensity.
文章介绍了用分光光度计、精密锁相器等制作的太阳电池光谱响应测量系统的方法及测量结果。
In this paper, we reported a measuring system of spectral response for silicon solar cell with lock-in amplifier and spectroscopic and show its testing result.
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