查询词典 esters

On the basis of this, 1,3-dipolar cycloaddition reactions were studied using imine esters as the starting marerials.

本论文使用不同类型芳香醛与氨基酸酯的加成反应合成了一系列氨基酸酯亚胺类化合物。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物，所述催化剂组合物包括：一种或多种齐格勒-纳塔主催化剂组合物，该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的助催化剂；选择性控制剂，该选择性控制剂包括至少一种包含硅的化合物，该化合物包括至少一种与硅原子连接的C 1-10 烷氧基；和一种或多种活性限制剂化合物，该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

An expert panel investigated the effects of the product in cigarette, the results showed when the dosage was in 5~10 μg/g, the glucose esters could improve and smooth the flavour quality of cigarette, and reduce irritancy greatly, etc.

产物的烟草加香作用评价结果表明：添加二元羧酸葡萄糖酯后，卷烟的香气量显著提高，杂气明显减少，烟气细腻柔和程度也有一定改善，可见二元羧酸葡萄糖酯在烟草应用方面具有良好的应用前景。

These are mixtures of mono- and di-esters of 3-substituted4-hydroxycinnamic acid and quinic acid, a sugar-like molecule.

这些是单酯，双酯，三代，四羟基苯乙烯酸以及奎宁酸的混合物，一种类糖的分子。

As investigated, the shape of the fruit was mainly rotundity, and the color of the fruit were red, black, yellow, mauve. Variation coefficient of mineral elements, which revealed wider variation range and rich genetic diversity. Among them, Fe, the content and the variation coefficient of which was the highest(2.12 mg·100g-1 and 26.99％), it has large potential for futher selection. Ripe fruit of 12 wild myrobalan plum seedlings were analyzed using head space-solid phase microextraction and gas chromatography-mass spectrometry. The results showed considerable genetic variations in these aspects: The total content of volatile components, the classes and contents of each compounds classes, the segregation ratio, and content of main components. There were 83 compounds in total belonging to 6 classes detected in 12 wild myrobalan plum seedlings, including esters, alcohols, ketones, aldehydes, heterocycle and Hydrocarbons. Among them, Formic acid, hexyl ester, the content of which was the highest(4.33 μg·g-1),was important character impact odors.

结果表明，①新疆野生樱桃李实生株系的果实形状主要为圆形，少数为椭圆形、卵圆形、卵形和宽卵形，果实颜色有黄色、红色、紫红色和黑色等4种类型，野生樱桃李果实纵径、横径、单果重、果形指数以及可溶性固形物含量均存在一定程度的变异，遗传多样性较为丰富，其中以单果重的变异系数最大(9.13 %)；②新疆野生樱桃李实生株系果肉组织的Zn、Ca、Mg、Mn、Fe及Cu等6种矿质元素含量变异丰富，其中以Fe元素的含量（平均值为2.12 mg·100g-1）和变异系数（26.99％）最高，进一步筛选高铁性状单株的潜力很大；③从新疆野生樱桃李12个实生株系中共鉴定出醇类、醛类、酯类、酮类、烃类及杂环类等6类83种挥发性化合物，各实生株系挥发性化合物总含量、挥发性化合物种类及其含量以及主要挥发性化合物分离比率与含量等存在广泛的遗传变异，遗传多样性较为丰富，其中以甲酸己酯含量最高（平均值为4.33 μg·g-1），是野生樱桃李果实香气形成的重要特征性化合物。

The most common examples are organic compounds, isomers of nitrite esters in which a carbon atom is linked by a covalent bond to the nitro group's nitrogen atom.

最常见的例子是有机化合物，亚硝酸盐类的同分异构体，其中一个碳原子以共价键与硝基中的氮原子结合。

Special paints resistant to phosphate esters are available, but the fluid itself is noncorrosive and provides the necessary protective coating.

耐磷酯的特殊涂料是可用的，但液压油本身无腐蚀性，并可提供必要的保护层。

Water,decyloleate,propylene glycol,stearic acid,glyceryl stearate,peg-100 stearate,iris germanica(orris extract/cells),chamomilla recutita,arctium majus,prunus dulcis,ceteareth-3, Triethanolamine,phenoxyethanol,methylparaben,imidazolidinyl urea,carbomer,c12-13 alkyl lactate,disodium edta,propylparaben,glyceryl hydroxystearate,cetyl esters,ethylparaben,pentadecalactone,cera microcristallina,trihydroxystearin,butylparaben,hydroxystearic acid,isobutylparaben,chlorhexidine digluconate,tetradecyloctadecanoic acid,tetradecyleicosanoic acid,tocopherol,lecithin,ascorbyl palmitate,glyceryl oleate,citric acid

水，油酸癸酯，丙二醇，硬脂酸，甘油硬脂酸，聚乙二醇硬脂酸酯，鸢尾花提取物/活细胞，洋甘菊萃取，牛蒡提取物，甜杏仁油，鲸蜡硬脂醇醚，三乙醇胺，苯氧乙醇，羟苯甲酯，尿素醛，卡波姆，c12-13烷醇乳酸酯，乙酸乙二胺二钠，羟苯丙酯，甘油羟基硬脂酸酯，十六烷基酯，羟苯乙酯，环十五内酯，微晶蜡，三羟基硬脂精，羟苯丁酯，羟基硬脂酸，对羟基苯甲酸异丁酯，洗必泰葡萄糖酸盐，十四烷基十八烷酸，十四烷基二十烷酸，维生素E ，卵磷脂，抗坏血酸棕榈酸酯，甘油硬脂酸，柠檬酸水：几乎所有护肤品成分第一位都是水。油酸癸酯：滋润、柔肤剂，并常添加于多种化妆品中作为溶剂

Purple acid phosphatases catalyze the hydrolysis of a wide range of natural and synthetic orthophosphate esters and anhydrides including ATP, pyrophosphate and phosphotyrosyl proteins.

与其他磷酸酶不同，紫色酸性磷酸酶中含有Fe-M双金属原子中心而使该酶具有天然的紫色或粉色，它也因此受到科学家们的广泛重视。

In this study, we evaluatedthe antinociceptive and antiinflammatory effects and durationof action of several novel depots of ketorolac esters, suchas ketorolac propyl ester, pentyl ester, heptyl ester, and decylester, and observed whether they had a long-acting effect.

在这个研究中，作者评估了几种酯类酮咯酸的新制剂的抗伤害、抗炎效应和作用持续时间，例如，丙基酯，戊基酯，庚基酯和葵酯酮咯酸，观察他们是否长效。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。