Esters的例句大全

Stereochemistry of tautomerism ⅰ. studies on tautomeric equilibrium of alkyl malonic esters

互变异构的立体化学Ⅰ.烃基丙二酸酯的互变异构平衡的研究

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A Pilot Test of Synthesis of Complex Esters used in PVC External Lubricant

聚氯乙烯外润滑剂高分子复合酯的中试研究

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The aroma of persimmon fruit is weak, main components are alkanes and esters, such as tetradecane, 2-methyl-decane, hexadecane and ethyl decanoate.

柿子果实的香气较弱，主要以烷烃类和酯类为主，如十四烷、2-甲基癸烷、十六烷等烷烃类物质和癸酸乙酯。

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A series of α,β unsaturated ketones and esters have been synthesized by Knoevenagel reaction of aldehyde with carbonyl compounds which have active methylene group in the presence of tellurium(ⅳ) chloride in excellent yields.

用TeCl4催化含有活泼亚甲基的羰基化合物与醛的Knoevenagel反应，合成了一系列α，β－不饱和酮或酯，收率最高达95%。

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A Study on infrared Spectra of Organotin Esters of Terebic Acid

芸香酸有机锡酯的红外光谱研究

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Results show that the essential oils of rhodiola crenulata mainly fatty acid, terpene, alcohol and a small amount of esters, ketones, aldehydes, paraffin, phenols and other ingredients.

结果表明，大花红景天的挥发油主要是脂肪酸类、萜类、醇类及少量酯、酮、醛、烷烃、酚类等成分。

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Synthesis of thio ethers and thiocyanic acid esters using triphase catalysis

芳香族对称硫醚和硫氰酸酯的三相催化合成

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Eight chiral a-bromo-carboxylic esters were synthesized by using thionyl chloride as a solvent and a reagent, two of them are new compounds.

以亚硫酰氯为试剂和溶剂合成了8个手性α-溴代酸酯，其中两个是新化合物。

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The esters and their areas of the slow frozen melon reduced, while the concentration of C9 unsaturated aldehydes and alcohols increased with the long time frozen storage, and they gradually became the main flavor compounds.

缓冻金皇后甜瓜多数酯的种类和含量减少，而冷冻和冻藏产生的C9不饱和醇和醛的含量增加，并逐渐成为冷冻甜瓜的主要香气成分。

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Synthesis of N, N-disubstituted glycine esters and their penetration enhancing activities

N，N-二取代甘氨酸酯的合成及其经皮促渗活性

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Gas Phase Reactions of Ni~+ With Molecular Flows of Esters and Their Mechanism in the Time-of-Flight Mass Spectrometer

飞行时间质谱仪中Ni~+与酯分子束流的气相反应及机理

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Synthesis of Mixed Dibasic Acid Dioctyl Esters on Sodium Bisulfate Monohydrate a binary compound of carbon with a more electropositive element.

一水硫酸氢钠催化合成混合二元酸二辛酯一种二元化合物，由碳和一个电正性的元素组成。

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Study on Antioxidative Activities of Gallic Acid Esters on Edible Oil and Fat

■酸酯类对食用油脂的抗氧化活性研究

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The effect of esters on the hydrophile-lipophile balance of nonionic surfactants

酯类对非离子表面活性剂的亲水亲油平衡值的影响

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Long-chain fatty acid esters of starch have some special properties, such as thermal plasticity, hydrophobicity, emulsifiability and biodegradability.

长链脂肪酸淀粉酯是一类具有特殊的热塑性、疏水性、乳化性和可生物降解性的变性淀粉，在食品、纺织、化妆品、医药等行业有着广泛的应用。

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Gas chromatographic analysis of fatty acid methyl esters ( GC FAME), Biolog ( computer aided numeric taxonomy method) and other tests were used for identification of 16 antagonistic bacteria against damping off of cucumber seedlings.

通过甲基脂肪酸气相色谱分析法（GC-FAME）、Biolog细菌鉴定法（借助于计算机的数值分类法）和其它试验对黄瓜苗期猝倒病具有明显防治效果的16株拮抗菌株进行分类鉴定。

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Biolog ( computer aided numeric taxonomy method), gas chromatographic analysis of fatty acid methyl esters ( FAMEs), basic bacteriology, selective media and pathogenicity test were compared for identification of 18 pathogenic bacteria from rice. Biolog and FAMEs were more believable and rapid methods.

对Biolog细菌鉴定法（借助于计算机的数值分类法）、甲基脂肪酸气相色谱分析法（FAMEs）、基础细菌学、选择性培养基及致病性测定等方法鉴定18个水稻标准病原细菌进行了比较。

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α-Keto esters play an essential role in biological processes.

芳基-α-酮酸酯在生物代谢过程中扮演了重要的角色。

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The Study of γ-Keto Esters Synthesis Reaction

γ-酮酯合成反应的研究

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study on the lubricity of two-stroke gasoline engine lubricants based on esters

酯基二冲程汽油机润滑油润滑性试验

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