1·Using a photometer that's more than three feet in diameter, Kepler is now continuously observing some 100,000 stars located between 600 and 3,000 light-years away.
利用一个直径超过3英尺的光度计，开普勒现正在不断观察位于600光年至3000光年远的约10万颗恒星。
2·Its major parts-the operating principle and circuit feature of drivers, the equipment for measurement of telescope position and infrared photometer are introduced.
详细地描述了它的主要部份——驱动装置，测角装置、红外光度计的工作原理和电路特点。
3·This paper describes an integrating photometer built at Purple Mountain Observatory recently.
本文介绍紫金山天文台直流积分型光度计。
4·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。
5·According to the principle and methods of the AFS-230E atom fluorescence photometer, arsenic in surface water has been determined, and the result showed a good linear relation, with 0.
根据AFS - 230e原子荧光光度计测定原理及方法，测定了地表水中的砷，结果表明：方法的线性关系良好，相关系数0。