查询词典 propane

Thirty-one new chiral phosphorus compounds have been synthesized starting from D-camphor,-alpha-phenylethylamine,-Betti base,-1-(4-nitrophenyl)-2-amino- propane-1,3-diol, L-amino acids (such as serine, phenylalanine, proline etc.) and their application as organocatalysts in asymmetric trimethylsilylcyanation of aldehydes and asymmetric borane reduction of prochiral ketones and ketimines were investigated.

该项目从D-樟脑、-alpha-苯乙胺、-Betti碱、-氯酶胺、L-氨基酸（如丝氨酸、苯丙氨酸、脯氨酸等）出发合成了31个新的手性磷化合物，研究了它们作为有机催化剂在醛的不对称硅氰化反应、潜手性酮的不对称硼烷还原反应以及亚胺的不对称硼烷还原反应中的催化效果。

Different bottlers of fuel propane use different odourants and so do green gas bottlers hence the different smells.

不同的燃料丙烷使用的刺激性气体的添加剂都不同，所以绿气的味道也许是不同的。

Technical grade propylene(92-93 percent,the balance being propane ) and anhydrous fertilizer grade ammonia are satisfactory.

技术级的丙烯（92－93％，平衡剂为丙烷）和无水化肥级氨水就能满足要求。

Study on the interaction between rarefaction wave and premixed propane-air flame In the research, the co-flow and counter-flow rarefaction wave were induced to intervene in the flame by different ignition scheme.

另外，管道中压力波的作用是Tulip火焰结构形成的重要原因。(2)研究了稀疏波对丙烷-空气预混火焰传播特性的影响。

The volume of air,propane and nitrogen was measured by laminar flowmeter and float valve flowmeter.

最后得到氮气稀释条件下丙烷空气混合气的层流火焰速度随稀释率的变化曲线

The carbon isotope data of carbon dioxide, 3He to 4He rado and the inverted sequence of methane-ethane-propane isotope proved that the gas reservoirs in this area were resulted from the inorganic mantle source gas.

CO2的碳同位素资料，3He / 4He比值及甲烷、乙烷、丙烷同位素的倒序证明了该区的气藏属于无机幔源气。

When propane gas cutting low-carbon steel plate,the cost varies with the thickness of the steel plate.

用于低碳钢板气割时，气割成本随板厚不同而变化。

Hydrolyzed protein contained can quickly supplement hair moisture and bring hair complaisant tactility and gloss; vitamin B5-can effectively repair beautiful hair and improve hair texture; propane – can increase the brightness and color of hairlines; enzophenone4-protect hair away from UV damage and protect beautiful hair and enhance hair color.

水解蛋白质，能迅速补充头发的水份并带给发丝柔顺的触感及光泽；维生素B5－能有效修护秀发，改善发质；丙烷－能增加发丝亮度与色泽；enzophenone4－保护头发远离紫外线伤害，保护秀发增泽发色。

It is advisable to avoid the use of Aramine with cyclo-propane or halothane anesthesia

如果不是临床需要，建议本品不要与环丙烷或氟溴氯乙烷麻醉剂合用。

Thus iron tetrakis porphyrin chloride , chosen as a catalyst in this study, was synthesized, and its solubility and catalytic activity in supercritical propane were investigated.

本研究选择多卤代卟啉铁作为催化剂，合成了四卟啉氯化铁，测定了TPFPPFeCl在超临界丙烷中的溶解度，并且考察了利用空气选择性羟基化丙烷的催化行为。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。