一种仪器，观察和测量射线的密度，比如放射性物质的粒子，包括一盖格试管和其它有关联的电子设备。

An instrument that detects and measures the intensity of radiation, such as particles from radioactive material, consisting of a Geiger tube and associated electronic equipment.

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采用基于CCD相机和朗伯靶的间接方法，研制一套点聚焦聚光设备的能流密度分布测量装置。

By using an indirect method based on CCD camera and Lambert target, a flux density distribution measurement system of point focusing concentrating equipment is developed.

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由于蒙气差随着大气密度、温度和压力等条件的变化而变化，为降低蒙气差对光电测量设备测量精度的影响，提出了精密恒星回扫的新方法。

A new method of precise star back scanning for reducing the influence of atmosphere refraction on the measurement accuracy of optoelectronic instrument is presented.

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