查询词典 acid ester

This dissertation focuses on the solid phase synthesis of several kinds of heterocyclic compounds from the resin bound cyclic malonic acid ester.

本论文从丙二酸环酯聚合物试剂出发，利用该试剂，完成了一系列的杂环化合物的固相合成研究，主要包括以下几个方面：一、制备了5-

In - situ photoelectrochemical microscopic method has been used to characterize the spatial variation of the film formed on the copper surface in buffer - borax solutions (pH 9.2) with different concentration of benzotriazole and combined benzotriazole methanoic acid ester .

采用激光扫描微区光电化学显微技术对不同浓度下的苯并三氮唑及其衍生物4-羧基苯并三唑甲酯与5-羧基苯并三唑甲酯的混合物在硼砂缓冲溶液(pH9.2)中对铜电极的缓蚀作用作了比较研究。

The process was methanolysis ed alkyl inino-acetic acid ester hydrogen chloride salt from methyl-cyanide.

研究了由乙腈为原料经烷基亚氨基醋酸酯盐酸盐醇解制备原乙酸三甲酯的工艺方法，对投料比、反应温度、反应时间及中和指示剂等工艺条件进行了研究，得出较优惠的工艺条件。

Glucopyrone at room temperature for Ihr. Then it is leached, cooked for 5 min in 6 times boiled water immediately, followed by cooking at 90癈 for 25 min, during which mixture of sucrose fatty acid ester and monoglycerid must be added to the cooking water.

适宜的工艺参数为：将较低直链淀粉含量(＜16％)的粳米，用常法水洗后，以0.2％三聚磷酸钠与0.4％葡萄糖酸-δ-内酯混和溶液于室温浸泡1hr，沥水后投入6倍量沸水中煮制5min，再于90℃恒温水浴加热25min。

Gas chromatograph/mass spectrometer system was used to analyze polycyclic aromatic hydrocarbon (PAHs, including naphthalin, anthracene and fluoranthene) and phthalic acid ester [PAEs, including dimethyl phthalate, diethyl phthalate, diisobutyl phthalate and di(2-ethylhexyl) phthalate] concentration in water samples taken from every treatment units of a large-scale waterworks in a western city whose water source is the upstream of Yangtze river.

以多环芳烃(包括萘、蒽、荧蒽三种物质)和邻苯二甲酸酯包括邻苯二甲酸二甲酯(DMP、邻苯二甲酸二乙酯、邻苯二甲酸二异丁酯、邻苯二甲酸二(2-乙基己基)酯4种物质作为研究对象，采用GC-MS方法测定了以长江为原水的某大型城市给水厂各工艺段水样中的上述物质。

Octadecanoic acid, ester with 1,2,3-propanetriol

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In this articls,the monitoring method of phthalic acid ester in air was established by gas chromatography.

本文通过气相色谱法建立了大气中邻苯二甲酸酯的监测方法。

Harmful Effect of Phthalic Acid Ester on Human and Environment.

酞酸酯对人和环境的危害。

The dry matter weight accumulation of different organs in growth process and contents of scutellarin and coffeic acid ester in whole plant of E. breviscapus were determined.

观测了灯盏花植株的生长发育进程，全草及各部位的干物质积累规律和全草主要有效成分灯盏乙素和咖啡酸酯含量的积累规律。

Ingredients: Wheat Flour, Sugar, Soybean oil, Salt, Yeast, Bread ImproverSodium stearyl lactate, Diacetyl Tartaric Acid Ester of Mono(di Glycerides ,Vitamin C

小麦面粉，白砂糖、大豆色拉油、食盐、酵母、面包改良剂（含硬脂酰乳酸钠、双乙酰酒石酸单双甘油脂、维生素C）。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。