在实验室制造出来的元素光谱，用来比对天文观测上所量测到的光谱。
... comparison microscope 比较显微镜 comparison spectrum 比较光谱 compensated microphotometer 补偿测微光度计 ...
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但是利用这种方法收集的光谱地点局限性强，而且很难构建用于同天文学家所提出的远地点行星进行比较的整体画面。
But spectra gathered in these ways are too localized and too precise to build up the fuzzy big picture needed for comparison with the distant planetary dots turned up by astronomers.
记录并比较伴随地得到的供试溶液和标准溶液的光谱。
Record and compare the spectra concomitantly obtained for the test solution and the Standard solution.
本文利用等离子体光谱诊断法对水下焊接电弧温度进行了比较系统的研究。
In this paper the temperature of underwater welding arc is investigated systematically by means of spectral diagnostics of plasma.
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