spectrograph

The paper introduces the basic principle, constitutes and classify of Mass spectrograph, and mainly reviews the application of food analysis in injurant and toxicant.

本文对质谱技术进行了简要的介绍，并就此技术在食品中有毒有害物质的分析方面的应用进行了综述。

Wavelength calibration and radiance calibration method by using standard DC mercury lamp and tungsten lamp are described, with the spectrograph, 290~ 450 nm solar ultraviolet/ atmosphere spectrum is measured and the measured results are given.

介绍了使用标准直流汞灯和标准石英卤素钨灯进行波长定标和辐射定标方法。并利用该平场光谱仪对290～450nm太阳紫外/大气光谱进行了测量，给出了测量结果。

For neutron spectrograph, what we can decide is hydrogen, not water. Furthermore, we are failing to find any water vapor after the impact of Lunar Prospector.

月球表面粗糙度同样可以引起雷达回波呈现出类似水冰的异常特征，而中子探测仪测量到的仅仅是氢信号而非水，而且月球勘探者号撞击月表之后并没有探测到任何的水蒸气信号。