查询词典 sulfur ether

In the presence of Pt catalyst, polyhydrodimethylsiloxane reacted with allyl polyoxyethylenepolyoxypropylene ether (F-6) by hydrosilylation to form an intermediate polyether silicone, which further undergo phosphation reaction with phosphorous pentoxide, a kind of phosphate modified polyethersiloxane surfactant was prepared.

采用铂作催化剂，通过含氢硅油和端烯基聚醚（F-6）的硅氢化加成反应先制得聚醚硅油中间体，再将其和五氧化二磷进行酯化反应，制得了一种磷酸酯型有机硅表面活性剂。

A traditional acidification method incorporated with an ether extraction technique was used to prepare silicotungstic acid and phosphotungstic acid with Keggin structure.

采用盐酸酸化-乙醚萃取法制备了Keggin型硅钨酸、磷钨酸，并分别以活性炭和硅胶为载体，采用不同的制备方法制备出一系列负载型杂多酸。

The photophysical properties of anthraquione crown ether and its 〓complex have been investigated.

研究了蒽醌冠醚及其铕离子络合物的光物理性质。

Nanometer and micrometer ZrO2 particle-filled poly (phthalazine ether sulfone ketone) composites with various filler volume fractions were prepared by heating compression molding. The hardness and flexural strength were tested.

采用热压成型的方法制备了纳米、微米ZrO2填充聚醚砜酮复合材料；考察了复合材料的显微硬度和弯曲强度；并研究了干摩擦条件下纳米、微米ZrO2颗粒对复合材料摩擦磨损性能的影响；利用扫描电子显微镜观察分析ZrO2/PPESK复合材料磨损表面形貌及磨损机理。

A novel poly(phthalazine ether sulfone ketone, PPESK) stir bar was prepared. The method for analyzing trace level nitroaromatic explosives in aqueous samples by stir bar sorptive extraction coupled to GC through thermal desorption was developed.

制备了以聚醚砜酮为萃取相的新型固态萃取搅拌棒，建立了一种固态萃取搅拌棒/热解吸器直接热解吸/气相色谱联用分析水样品中痕量爆炸物的新方法。

Ayurveda, India's holistic, integrated, physiotherapeutic medical system is based upon the universal natural law of balancing the five elements (ether, air, fire, water and earth) that make up the physical body.

Ayurveda是印度的一套完整的物理治疗医学体系，它以平衡自然界的五行为基础，这五行是组成我们身体的五大要素。

The effects of the extracts from Brucea javanica using chloroform and ether acetate on the activity of protease and the protein contents of Pieris rapae were studied.

鸦胆子氯仿和乙酸乙酯提取物对菜青虫幼虫蛋白酶的活性和蛋白质含量均有明显影响。

Some homologs were synthesized from polyglycerols with different polymerization degree. The polyglycerol dodecyl ether had good capacity of reducing surface tension.

并利用自制的不同聚合度的甘油，合成了一系列同系物产品，该新型非离子表面活性剂具有良好的降低表面张力的能力。

Hydroxypropylmethylcellulose which possesses weak polarity groups, like polyhydroxy groups and ether groups, will transform to hydrogel when temperature increases.

纤维素衍生物羟丙基甲基纤维素分子中含有大量的羟基和醚键，其水溶液在升温情况下可以发生凝胶转变，是一种新型的有机模板，本文对其作用下特别是凝胶状态下的矿化进行了探讨。

In this paper, the different volume ratio additives'influences on the economy of different fuels as well as the characteristics of combustion and emission have been investigated employing the knowledge about combustion dynamics and chemical reaction dynamics on the base of the gasoline additives application actuality in engine. Dimethyl Carbonate, Diisopropyl Ether and Ditert-Butyl Peroxide are selected as gasoline additives to explore the potential and promotable additives by engine tests in different base fuels.

本文根据汽油添加剂的应用现状并结合内燃机燃烧学、化学反应动力学等知识，选择用碳酸二甲酯、二异丙醚、二叔丁基过氧化物作为汽油添加剂，通过不同基础燃油的发动机台架试验，研究不同添加体积比的添加剂对不同燃油经济性、燃烧特性、排放特性的影响，以探求潜在的可推广使用的汽油添加剂。

You think you're a big shot.

你认为你是一个大人物？

All states are equal, and none can receive special treatment from the federal government.

所有的州都是平等的，任何州都不能获得联邦政府的特别待遇。