记录浓度和时间，以提取速率系数。
Record concentrations and time in order to extract rate coefficients.
气溶胶消光系数与质量浓度的相关性研究。
Study on relationship between extinction coefficient and mass concentration.
此模型可以对渗透液中d -色氨酸的浓度和分离系数进行较准确的预测。
The model could well predict the concentration of D-tryptophan in the permeated solution and separation factor.
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