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ethers

音标:/'i:θə/ 生词本: 添加笔记:
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| 划词
n. 乙醚;醚类(ether的复数)

crown ethers

冠状醚(crown ether的复数)

glycol ethers
乙二醇醚

Its ether extract contains Isopsoralen and Bergapten.

香豆素类应为五指毛桃的有效部位之一。

In this paper, the cedrol methyl ether was synthesized by sodamide method.

本文采用氨基钠法合成甲基柏木醚

Behaviors of armeen,tertiary amine,poly-amide and ether amide in floatation of kaolinite,pyrauxite and illite are studied.

研究脂肪伯和醚四种药剂对高岭石、叶腊石、伊利石的浮选行为,结果表明捕收能力顺序为>>醚>脂肪>伯

In this thesis, the reaction of aldehydes with dimethyl -- dichlorosilane producingdimethylsilyl bis -- enol ethers has been studied.

本文对醛和二甲基二氯硅烷反应合成二甲硅基双烯醇醚进行研究。

One new solvent free impregnating resin based on unsaturated polyester with modified diphenylene ether is prepared.

以改性二苯醚树脂为料,合成一种新颖不饱和聚型无溶剂浸渍绝缘漆。

For polysaccharide synthescs,ring open-ing polymerizatlon of 1,6-,1,4-,1,3-,and 1,2-anhydro sngars,and polycondensation of cya-noethylidene trityl ether sugars are described.

糖的合成主要介绍1,6-、1,4-、1,3-、1,2-缩水内醚糖的阳离子聚合制备均聚糖,及用糖衍生物通过缩聚反应制备糖。

Structure, mechanics, electricity, calorifics, radialization and chemicalproperties are reviewed for polyperfluoroethylene-propylene and tetrafluoroethylene perfluoroalkyl vinyl ether copolymer.

分别阐述聚全氟乙丙烯和四氟乙烯全氟代烷基乙烯基醚共聚物的结构和力学热学、辐射、化学性能。

In this paper ten lactonic crown ethers weresynthesized, of which seven were new compounds.Theirstructures were confirmed by EA,IR,1HNMR andMS analysis.

合成10个内型冠醚化合物,其中7个冠醚是新化合物,其结构均由元素分析,及红外、核磁、质谱分析证实。

In this paper,a type of kilomega bps chips group for ether net which surpasses the standards by large abundance is presented.

介绍一种性能超越规范很宽裕量的千兆位以太网芯片组。

Two new exocyclic ring-fused boron-dipyrromethene (BDP) dyes with benzo crown ether subunit at meso-position were prepared.Their spectroscopic and electrochemical properties were investigated.

本文报道两种中位为苯并冠醚亚单元取代的含稠合外环的硼-二吡咯亚甲基染料的合成、光谱和电化学性质。

119.0 g of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

119克环戊溴和19.4克镁在空气中或者四氢呋喃中加入环戊格林尼亚试剂作发生反应。

Archaean cell walls lack murein, a common component of bacterial cell walls, and their lipids have ether links rather than ester links.

古细菌的细胞壁缺乏细菌细胞壁组成的普遍物质-胞壁质,其连接是连接而不是连接。

Without action, even the most grand of dreams evaporate into the ether when left unnurtured in the misty realms of the mind.

但光有梦想是不行的,你还必须对自己的梦想有信心并付诸行动。

The selective oxidation of ethers by chromic reagent, peroxide, nitric acid, oxygen and ozonide, as well as the ethers anodic oxidation are particularly introduced.

主要介绍铬(Ⅵ)类试剂,过氧化物、硝、氧和臭氧等各类氧化剂对醚选择性氧化以及醚的阳极电氧化研究状况。

The title resin has been prepared by Friedel-Crafts acylation followed by bromination and amination.The method avoids the utilization of cancerogenic chloromethyl methyl ether.

通过付氏酰基化反应引入乙酰基,接着溴化、化,得到标题树脂。该法避免使用氯甲醚。

Different solvent extractions of Spora Lygodii were obtained using methanol,chloroform and petroleum ether as medium.Experiments were carried out on them by FT-IR spectra.

以甲醇、氯仿、石油醚为提取溶剂,提取中药材海金沙得到海金沙不同溶剂提取物,采用红外光谱(FT-IR)图谱鉴别法对提取物进行实验。

The study is the synthesis of BFO in the medium of PEG or its derivatives - polyethylene glycol alkyl ether and polyethylene glycol alkylphenyl ether.

本论文以PEG或其衍生物脂肪醇聚氧乙烯醚和烷基酚聚氧乙烯醚为介质合成BFO。

Under acid condition open chaining crown ether diaromatic aldehyde can react, and they will synthesize a compound of chaining crown ether diaromatic aldehyde thiosemi-carbazone kind.

摘要链状冠醚二芳醛在性条件下与氨基硫脲反应,合成链状冠醚二芳醛缩氨硫脲类化合物。

Three open crown ethers were synthesized for the first time by using parathesin as the terminal group.They were characterized by IR, 1HNMR ,MS and EA.

以对氨基苯甲为端基合成3种酰型开链冠醚,并通过IR、~1HNMR、MS和元素分析确证它们的结构。

Benzylic ether phenolic resin is one of the main components of foundry polyurethane binder; its structure and preparation condition determine the performances of polyurethane binder.

苯醚型酚醛树脂是铸造用聚氨粘合剂的主要成份之一,它的结构及合成工艺条件决定该类粘合剂性能。

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lobule, lobules, lobulous, lobulus, lobus, lobworm, loc, loca, local, local anaesthesia,

相似单词


etheromania, etherometer, etheron, etherone, Etherrausch, ethers, ethesdanine, ETHF, ethic, ethical,
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