用时间分辨热透镜技术测定了铬酰氯分子在不同气压下的弛豫速率。
Relaxation rates of chromyl chloride molecules have been measured under different pressures using the technique of thermal lensing.
本文对二苯碳酰二肼分光光度法测定地表水及工业废水中六价铬的样品预处理方法提出了改进措施。
In this paper, the preparatory treatment for determination of Cr6+ in ground water or industrial effluents by the method of spectrophotometry has been improved.
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