- 更多网络例句与均四氯乙烷相关的网络例句 [注:此内容来源于网络,仅供参考]
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In some areas, the risk levels of carbon trichloride, hexachlorobutadiene, carbon tetrachloride, chlorylene, tetracarp, trichloroethane , chloroform, gammexane and other pollutants all exceed 10-4, all above the harm value of 1, and these pollutants are likely to cause risks to human health.
而少数区域的六氯乙烷、六氯丁二烯、四氯化碳、三氯乙烯、四氯乙烯、1,1,2-三氯乙烷、氯仿和六六六等污染物风险等级均大于10-4,危害商均大于1,这些污染物均能对人体健康产生风险。
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Diaminoalkanes react with sym - tetrachloroethane to give crystaline 2,2'- Bis -( hexahydropy-rimidine) derivatives 1 - 5, after treatment with aqua ammonia.
利用均四氯乙烷及二氯甲烷的胺化反应,合成了联氢化嘧啶衍生物1~5,4a,8b-反-4,5,8a,9a-四氮杂全氢芴(6)和8b,8c-顺-3a,4a,7a,8a-四氮杂环戊并全氢芴(7)。