查询词典 solvent

The variation of chemical composition of coal and extractability of the organic solvent after depolymerization has been observed.

化学降解可以使煤变成分子较小的化合物，有助于研究煤的本质和结构。

First of all, you cut costs like a dervish - just to stay solvent.

首先，你要像个苦行僧一样削减成本--这只是为了保持偿债能力。

As a designable solvent, a number of functional ionic liquids have been synthesized.

作为一种可设计的溶剂，数目繁多的新型离子液体不断涌现，然而结构性质关系暂不明确。

Objective To establish solvent desorption gas chromatographic method for determination of o-chlorostyrene in workplace air.

目的建立工作场所空气中邻氯苯乙烯的溶剂解吸气相色谱测定方法。

The article puts forward the detecting method of using normal butyl alcohol as outer standard substance, using PEG- 20M as fixation phaseand and hydrogen flame detecter, using methanol as solvent, detecting the content of trace MMA from composite material of artificial skull with gas phase chromatography method.

采用氢气焰离子化检测器，以正丁醇为外标物，PEG-20M为固定相，甲醇作为溶剂，气相色谱法测定复合材料人工颅骨中微量MMA的含量。

The solvent extraction of Am and Cm from picric acid solution by nitrobenzene solution of N, N, N', N'-tetraphenyl-3,6-diox'aoctane diamide was investigated and compared with the extraction of cerium, neodymium and europium.

本文研究了三甘酰双的硝基苯溶液从苦味酸溶液中萃取Am和Cm的性能，并与Ce，Nd和Eu的萃取进行了比较。

The recognition capability and adsorption rate of MIP can be significantly enhanced by selective modification.Separation factor could be increased from 1.60 to 3.06 after modification when naringenin was chosen as competitive molecules, and the time needed for adsorption equilibrium could be reduced from 100 min to 60 min.Within a certain range, increasing template molecule concentration or diazomethane dosage, or adopting solvent which had weaker hydrogen bond action with template molecules could all improve the modification effect.

结果表明，选择性修饰能明显提高MIP的识别能力与吸附速度，以柚皮素为竞争分子，分离因子可从修饰前的1.60提高到修饰后的3.06，吸附平衡时间从修饰前的100 min降低至修饰后的60 min；在一定范围内提高模板分子浓度，增大重氮甲烷用量，采用形成氢键能力较弱的溶剂，均能提高修饰效果。

Molecularly imprinted polymer using quercetin as template molecules, methacrylic acid as functional monomers, ethylene glycol dimethacrylate as crosslinking agent were prepared, and the binding sites of MIP were selectively modified with diazomethane.The effects of template molecule concentration, solvent and diazomethane usage on modification were discussed.

以槲皮素为模板分子，甲基丙烯酸为功能单体，乙二醇二甲基丙烯酸酯为交联剂，制备了分子印迹聚合物，并以重氮甲烷为修饰剂，对MIP的结合点进行了选择性修饰，探讨了模板分子浓度、溶剂及重氮甲烷用量等对修饰效果的影响。

To establish a gas chromatography method for solvent desorption of dichloromethane in the air of workplace.

目的 建立工作场所空气中二氯甲烷的溶剂解吸气相色谱测定方法。

Dichloromethane was used as the solvent and selected optimal extraction conditions were selected and adopted.

选择二氯甲烷为溶剂，λmax=272nm，参比油浓度C_1和C_2分别为45mg·1~(-1和350mg·1~(-1左右，工作曲线测量范围为45—300mg·1~

Sodium citrate; calcium carbonate; calcium hydroxide; potassium bicorbonate; magnesium carbonate; ferrous sulphate; Zinc sulphate; copper sulphate; manganese sulphate; potassium iodide; sodium selenite.

柠檬酸钠；碳酸钙；氢氧化钙；碳酸氢钾；碳酸镁；硫酸亚铁；硫酸锌；硫酸铜；硫酸锰；碘化钾；亚硒酸钠。

All this to say that I'm glad filmmaking hasn't become completely ironic. I can enjoy an ironic film as much as the next person, but they usually involve a message of some sort. One that's delivered in a smirkingly clever way that requires little in the way of talent.

所有这些都是说，我很高兴电影制作没有变成完全讽刺艺术，我可以和下一个人一样享受讽刺电影的乐趣，虽然他们经常会被划归到一定级别，技术方面不需要很高的才能。