查询词典 butanone

To study the analysis method of samples including a combination of dimethylformamide, undecane and butanone in the air of workshop.

［目的］研究工作场所环境空气中二甲基甲酰胺、十一烷和丁酮混合物一次吸附、一次分离的定量分析方法。

After the gold ore sample has been roasted under high temperature, extracting agent of methyl butanone extracts the gold.

由于金在矿石中的含量很低，要根据矿样的性质采用不同的预处理、溶样、分离、富集和测定方法。

The products of the ion/molecule reactions of butanone and propenol were determined by FTMS.

以丁酮、丙烯醇为例，采用FTMS对反应产物离子进行准确质量测定，验证了它们各自的分子离子反应结果。

The invention discloses a strain for generating 3-hydroxy butanone and the application thereof, which belong to the field of bioengineering technology.

本发明属于生物工程技术领域，公开了一种产3-羟基丁酮的菌株及其应用。

Working condition of GC system was established perfectly. With the internal standard of butanone, volumetric concentration of benzene was calculated by the calibration curve.

该方法确定了最佳阀切换反吹时间和操作条件，以丁酮为内标物，通过建立苯的校正曲线定量计算样品中苯的体积浓度。

It serves as the general agent for Heilongjiang Petrochemical Plant in the markets of North China,East China, and South China,and has signed agency contracts with all big producers to become a leading enterprise for dealing in butanone.

本公司是黑龙江石油化工厂华北、华东、华南地区总代理，并与各大生产厂家筌定了代理合同，成为甲乙酮经销的龙头企业。

In the dilution of the solvents, additional polar solvent such as butanone, isopropyl alcohol, ethanol, and so on to ethhyl.

在不浓缩的溶剂洋，补增极性溶剂，如丁酮、异丙醇、乙醇等，多用乙酯。

And the accurate masses of the product ions of butanone and propenol resulting from the ion/molecule reactions were obtained.

另外 ，把该类化合物(30个)SCI反应的质谱图与NIST98库中的标准EI质谱图进行了比较，建立了SCI质谱图库，提高了在离子阱质谱上对这类小分子化合物定性分析的准确率。

The Mannich reaction of butanone, aromatic aldehydes and aromatic amines.

对-甲苯乙酮与芳香醛和芳香胺的Mannich反应。

Methods: Based on national standard, detected n-hexane, benzene, toluene, dimethylbenzene, ethyl acetate, butyl acetate and butanone in 450 factories.

根据中华人民共和国国家标准，对昆山市的450家接触正己烷、苯、甲苯、二甲苯、乙酸乙酯、乙酸丁酯、丁酮7种有机物的企业车间空气进行采样检测。

These rules reflect some inherent feature of self and nonself, and they are the basic detection criterion of GECISM.

这些规则反映了"自我"和"非我"的内在特征，是GECISM进行"非我"检测的判据。

Until today, the media from China and the outside world still uses the term "Post 89". Regardless to whether it is for commercial gimmick or convenience, everybody still remember "Post 89", a term which carries a strong Cantonese accent.

时至今日，国内外艺术媒体还是在沿用&后八九&这个称谓，不管当初是为了商业噱头还是容易上口好记，反正大家现在是记住了&后八九&这个广东口音很重的词。