Each pattern stands for a distinct chemical element, and so different sets or patterns of spectral lines mean that the star has a different chemical composition.
每一种样式代表一种不同的化学元素，所以光谱线的不同集合或模式意味着这颗恒星有不同的化学成分。
The measure technology of multi-channel nuclear energy spectral is the basis of matter composition analysis and radioactivity detection by way of nuclear analysis method.
多道核能谱测量技术是用核分析方法进行物质成分分析和放射性检测的基础。
With these spectral methods, the chemical composition and the structure of the polishing paste for plastics were identified.
通过上述光谱法确定了该塑料抛光膏的化学组成和结构。
The IR spectral characteristics, chemical composition and typomorphic characteristics of quartz are the important prospecting criteria for this deposit.
石英的红外光谱学特征、石英的化学成分及形态是该银矿床重要的找矿矿物学标志。
The photocathode composition determines the spectral response, the quantum efficiency at each wavelength, the overall uniformity of photomultiplier sensitivity, and the dark current.
光电阴极的构成决定光谱响应、每种波长的量子效应、光电倍增管灵敏度的均一性和暗电流。
On the basis of the equilibrium composition of SFe arc plasma, the emission coefficients of the spectral lines, which were usually chose in the spectral analysis of SF6 arc plasma, were computed.
在SF_6电弧等离子体平衡成份的计算基础上，本文计算了一些SF_6等离子体光谱分析中常选用的几条谱线的线光谱发射系数。
On the basis of the equilibrium composition of SFe arc plasma, the emission coefficients of the spectral lines, which were usually chose in the spectral analysis of SF6 arc plasma, were computed.
在SF_6电弧等离子体平衡成份的计算基础上，本文计算了一些SF_6等离子体光谱分析中常选用的几条谱线的线光谱发射系数。
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