查询词典 acid anhydride

When the concentration of zinc nitrite is lower than 0.1 M,(002) is the prior face for zinc oxide. As the concentration raise, the other kinds of crystal face would appear. Among those data,(002) grows the best when the concentration of zinc nitrite is 0.06 M. We add lactic acid and citric acid respectively; there is an carboxyl group on the lactic acid and three carboxyl groups on the citric acid. The monodentate of lactic acid helps the growth of zinc oxide, compared to the tridentate of citric acid which can only produce zinc oxide film under very low concentration, but the growth of (002) face is not that stable as adding the lactic acid and zinc will electrodeposit to substrate.

实验中，当硝酸锌浓度低於0.1 M 时，氧化锌以(002)面为优选位相，当浓度提高，其他晶面将会出现，当硝酸锌为0.06 M，(002)晶面成长最佳，分别加入乳酸和柠檬酸，乳酸结构上有一羧基团而柠檬酸有三个羧基团，单芽基的乳酸有助於氧化锌成长，对照於三芽基的柠檬酸，则必须在极低的浓度下才能制备氧化锌薄膜，但(002)面成长却没有添加乳酸来的稳定而金属锌也会电沉积到基板上。

There weremainly p-hydroxybenzoic acid,vanillic acid,and syringic acid in soybean root exudates.Vanillicacid,syring acid and ferulic acid were found in soybean shoots.The soybean roots containedvanillic acid and p-coumaric acid.

大豆根分泌物中主要含有对羟苯甲酸、香草酸和丁香酸，而大豆植株地上部主要含有香草酸、丁香酸和阿魏酸，根部以香草酸和香豆酸为主。

Sulfuric acid series, hydrochloric acid (AR hydrochloride, CP hydrochloric acid) series, nitric acid, phosphoric acid, boric acid, protopine, soda ash, ammonia, acetic acid, bleaching powder, chloride, alkaline chlorine of aluminum, nickel chloride, nickel sulphate, polyacrylamide, such as hydrogen peroxide.

硫酸系列，盐酸系列，硝酸，磷酸，硼酸，片碱，纯碱，氨水，冰醋酸，漂白粉，聚合氯化铝，碱式氯化铝，氯化镍，硫酸镍，聚丙烯酰胺、双氧水等。

Thirdly, the acrylic rosin was synthesized by the addition reaction from gum rosin andacrylic acid. The levo-pimaric acid was converted into acrylic pimarie acid throughDiels-Alder addition with acrylic acid. The abietic-type acids in the gum rosin were inisomerization balance under high temperature, and the abietic acid and palstric acid would beconverted into levo-pimaric acid and reacted in the later type.

第三，通过脂松香与丙烯酸加成合成了丙烯酸松香，该反应是左旋海松酸与丙烯酸发生Diels-Alder加成反应生成丙烯海松酸，由于脂松香中的枞酸型树脂酸在高温下处于异构化平衡状态，因此随着反应的进行枞酸、长叶松酸等会异构化为左旋海松酸参与反应。

Most sugars, organic acids, phenolic acids and most amino acids increased significantly with elevated CO_2. The treatment, 950±50μmol·mol-1 CO_2 enrichment for 6 h every day had more obvious effects than the treatment, 950±50μmol·mol-1 CO_2 enrichment for 3 h every day. Levan, sucrose, arginine, oxalic acid, alanine, malic acid, acetic acid, lactic acid cinnamic acid,ρ- hydroxybenzoic acid and benzoic acid increased significantly.

CO_2施肥黄瓜根系分泌有机酸、氨基酸、糖和酚酸的总量增加，上、下午均施肥的处理分泌数量最多；CO_2施肥显著促进了果聚糖、蔗糖、草酸、苹果酸、乙酸、乳酸、多数氨基酸、肉桂酸、对羟基苯甲酸和苯甲酸等组分的分泌；单位鲜重根系分泌糖和酚酸的数量增加，多数氨基酸保持不变或降低，但有机酸分泌规律不一致。

The major acid detected in the apple rhizosphere and the wormcast was oxalic acid, malic acid, tartaric acid, succinic acid and malonic acid, one of highest content was oxalic acid.

苹果根际和蚯蚓粪中检测到的有机酸主要有草酸、苹果酸、酒石酸、琥珀酸和丙二酸，以草酸含量为高。

Kinds of commercial milk powder were analysed with GC-MS in order to learn about their fat acid compose,and the result illuminated that there were 28 kinds of fat acids were detected in all samples,and only octanoic acid and decanoic acid were detected from 4 kinds of season fat acids of hexanoic acid, octanoic acid ,nonanoioc acid and decanoic acid.

用气质联用色谱分析了11个商业奶粉样品的脂肪酸组成以及含量，每个样品均检测到了28种脂肪酸，在表现奶粉风味的4个呈味脂肪酸，也即辛酸、己酸、壬酸和葵酸中只检测到了辛酸和葵酸。

Long-chain Dicarboxylic acid; 11 carbon dicarboxylic acid; twelve carbon dicarboxylic acid; tridecanedioic acid; 14 carbon dicarboxylic acid; 15 carbon dicarboxylic acid; carboxylic acid

一期工程年产6000吨的发酵长碳链二元酸（DC11~DC15、DC18）生产线于2003年3月建成投产，装机容量6万KW的热电厂于2004年3月并网发电。

Leading industries of biological, chemical and nano-materials, the main products have erythritol, glucose, sodium, soy oligosaccharide-peptide, refined clothing acid, itaconic anhydride, kojic acid, kojic acid derivatives, arbutin, Calcium Citrate , sodium citrate, Apple sodium, potassium citrate, nano zirconia, long-chain dicarboxylic acid, and efficient water treatment agent non-phosphorus.

主导产业为生物化工和纳米材料，主要产品有赤藓糖醇、葡萄糖酸钠、大豆低聚肽、精制衣康酸、衣康酸酐、曲酸、曲酸衍生物、熊果苷、柠檬酸钙、柠檬酸钠、苹果酸钠、柠檬酸钾、纳米氧化锆、长链二元酸、高效无磷水处理剂。

Kinetics of photo-chlorination of acetic acid to form monochloroacetic acid ;2. The mechanism for chlorinate acetic acid to monochloroacetic acid by using acetic anhydride or sulfur as catalysts respectively was studied.

通过对硫磺和乙酐催化氯化制备氯乙酸反应机理的分析研究，采用硫磺及乙酐复合催化剂，并且对氯化温度、氯化气氛、尾气回收等进行了过程优化，实现了乙酸氯化反应工艺条件的重大突破，使得氯乙酸的收率达到92。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。