在目前的状况下，天文学家心照不宣地默认，光度和颜色都相同的恒星具有相同的质量。
In this situation astronomers tacitly assume that stars of the same luminosity and color all have the same mass.
结论分光光度法测定结果能反映客观实际，可作为蜂胶质量控制方法之一。
Conclusion the detecting results by spectrophotometry can reflect the objective reality and may be one of the methods for controlling the quality of propolis effectively.
利用紫外分光光度计和高效液相色谱仪建立了色谱纯乙腈的性能和质量的评价方法。
A evaluation method for the performances and quality of chromatographic grade acetonitrile with ultraviolet spectrophotometry and high performance liquid chromatography is presented.
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