介绍了一种毛细管气相色谱法测定1,3 -丁二烯中炔烃杂质含量的新试验方法。
A new test method, in which alkyne impurity content in 1, 3-butadiene is determined by a capillary gas chromatograph, was introduced.
采用田间试验及人工渗滤池试验方法，研究了土壤中硝态氮含量的影响因素。
An experiment in field and artificial penetration-filter pond test both were conducted to show factors affecting content of nitrate-nitrogen in soil in the present study.
研究了氮含量对热镀锌双相钢拉伸性能的影响，用定拉伸试验方法模拟了平整伸长率对热镀锌双相钢屈强比的影响。
Using scaling tension test method simulated the effect of leveling elongations on yield strength ratio of hot dip galvanized dual phase steels.
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