The effect of O 2 flow rate on the background emission and some atomic and ionic lines in the new source is exploited in this paper.
本文主要探讨了屏蔽气氧气流量变化时对该新光源背景发射光谱及某些元素的原子线、离子线发射的影响。
The red glow in the background results from IC 1396, a large emission nebula that houses the Elephant's Trunk Nebula.
背景的红色光芒来自于 IC 1396，这是一个大型发射星云，其中居住着象躯星云。
Spectral pattern recognition techniques are employed to suppress the strong and highly varying background to extract the very weak emission features from the compound spectra.
谱的模式识别技术可用于强变化的背景压缩和提取化合物极为弱小的发射特征。
Other contributors to cancer risks include local industry emissions, which make up about 25 percent of the average overall risk, and "background" pollutants with no known emission sources.
癌症风险的其它因素包括当地的工业排放物，约占平均总体风险的百分之25，以及不知道排放源的“背景”污染物。
Thermal emission polarization detection is a very good approach to identify metal target from the background.
热红外偏振探测有利于从背景中识别金属目标。
When there is temperature difference between the pollutant gas and the background, the absorption and emission characteristics of the pollutant gas can be revealed in infrared spectra.
当污染气体与背景存在温差时，红外光谱就能反映出污染气体的吸收或发射特征。
A comprehensive introduction of the three main automobile emission regulation systems as representative of American, Europe and Japan and their background, evolution and developing trends are given.
全面介绍了以美国、欧洲和日本为代表的三大汽车排放法规体系，并阐述了这三大排放法规体系各自的产生背景、演变历程及发展趋势。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
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