用双波长、差示、一阶导数分光光度法，建立了一种测定外源物体外代谢时一氧化碳(CO)生成量的新方法。
A double wavelength-differential-first order derivative spectrophotometric assay was established to determine carbon monoxide (CO) generation during in vitro metabolism of xenobiotics.
论述了通过双法兰差压变送器测定聚丙烯浆液密度，从而求出聚合反应釜中浆液浓度的方法，并进一步讨论了浆液浓度与平均停留时间、料位和聚合量等工艺参数之间的关系。
A method for calculating the slurry concentration inside the reactor was developed in this paper through determining the slurry density of polypropylene with double - flange pressure transmitter.
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