丙烷

The influences of different surfactants (sodium dodecyl sulfate, sodium cholate and sodium deoxycholate), different electrolytes (sodium phosphate monobasic, sodium tetraborate and 3-cyclohexylamino-1-propane sulfonic acid), buffer pH and organic modifiers on the determination of sialic acid were studied.

其次建立了一种测定唾液酸的在线富集CZE法，该方法用40 mM磷酸二氢钠为缓冲溶液电解质，通过将样品溶解在乙腈：水=2：1的样品基体中，进样时间增加到100 s来达到样品富集的效果，并考察了样品基体中乙腈浓度和进样时间对富集效果的影响，研究了用硼砂或3-环己胺-1-丙烷磺酸作为电解质、缓冲溶液pH值和有机修饰剂的加入对唾液酸检测的影响。

Nor was it the silvery inflated sphere, ten storeys high and fitted with giant propane burners, in which in 2002 he had made the first solo circumnavigation of the globe by balloon.

它也不是银白色的充气球体，十层楼高，装载着几个巨大丙烷燃烧炉。2002年他已经驾驶这气球作了第一次独自环球飞行。

Gas Distribution series of devices - from the control point of view, a semi-automatic and fully automatic with two gas from the gas source is composed of two groups of (liquefied petroleum gas, compressed air) and three groups of (nitrogen , Hydrogen, propane or butane) of the points is to provide natural gas and gas cities of the ideal alternative source of gas equipment, especially for gas production-line equipment manufacturers and test firing of Quality Supervision, Inspection departments for laboratory and performance of combustion Test.

从配气气源组成有二组份及三组份（氮气、氢气、丙烷或丁烷）之分；是提供天然气和城市人工煤气替代气源的理想设备，特别适用于燃气器具生产企业在线生产试烧和质量监督检验部门用于实验室及燃烧性能的检验。

One of the best dinner parties I ever went to was a cookout last summer where the family chef ran out of propane.

我参加过最好的一次晚宴聚会是去年的一次野炊；那时家厨的丙烷用完了。

Interaction of Cucurbit [7] Uril with N,N'-Bisalkyl-1,3-(4,4-bispyridyl) Propanes

篇名 七元瓜环与N，N'-二烷基－1，3-（4，4'-二吡啶基）丙烷衍生物的相互作用

At 100℃ and 0.5 MPa for 2 h, the conversion of cumene hydroperoxide is about 65.0% and the selectivity for propylene oxide is 70.4%.

在100℃，0.5MPa的条件下反应2h，过氧化氢异丙苯的转化率为65.0%，环氧丙烷的选择性为70.4%。

The epoxidation of propylene to propylene oxide, using cumene hydroperoxide as oxidant, molybdenum-glycol complex as catalyst and ethanol as solvent, has been investigated.

研究了以钼－醇配合物为催化剂，过氧化氢异丙苯为环氧化剂，乙醇为溶剂的丙烯一步氧化制环氧丙烷的反应。

For developing an immunoassay for multiple residues of pyrethroid pesticides, the hapten N-2- carbanmoyl-(3"-phenoxyphenyl) methyl 3-(2"-Cldoro-3",3",3"-trifluoropropenyl)-2, 2-dimethylcyclopropane- carboxylate was synthesized from cyanohydrin and 3-(2"-Chloro-3",3",3- trifluoropropenyl)-2, 2-dimethylcyclopropanecarboxylic acid via hydrolysis and esterification. The synthesis of the hapten was foundation of preparaing anti- cyhalothrin polyclonal antibodies.

为了制备对单一拟除虫菊酯高特异性的抗体，以菊酸和氰醇为起始原料，通过水解、酯化反应合成了半抗原N-2-氨甲酰-(3-苯氧基苄基)甲基-3-(2-氯-3，3，3-三氟丙烯基)-2，2-二甲基环丙烷羧酸酯，为进一步制备抗三氟氰菊酯的特异性抗体奠定基础。

This paper reviews the recent progress in the synthesis of cyclopropane amino acids.

本文综述了合成环丙烷氨基酸类化合物的近期研究进展。

A previous study, which found that cyclopropane and chloroethane decreased the solubility of benzene in water, probably erred in its conclusion that these anesthetics interfered with the interaction of benzene and water.

那个发现环丙烷和氯乙烷降低苯在水中溶解度的既往研究，可能在这些麻醉剂干扰了苯和水的相互作用的结论方面有误。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷