查询词典 precursors

By far the most important and immediate precursors of modern agnosticism were David Hume and Immanuel Kant.

迄今为止，最重要的和即时的前体的现代不可知论者大卫休谟和康德。

Thus, we redesigned and synthesized a series of new precursors devoid of the unfavourable structural elements for the organocatalytic intramoleculor aldol reactions.

我们重新设计合成了该关环前体的衍生物，希望除去分子中不利于Aldol反应的结构单元以实现关环反应。

The new methods allow a wide range of poly analogs to be obtained in few steps, as the allylic precursors are readily available.

新方法允许范围广泛的聚类似物，以获得在几个步骤，作为烯前体是现成的。

An advantage of the new methods is the utilization of easily accessible allylic amine derivatives as monomer precursors.

一，利用这种新方法是利用方便烯胺衍生物作为单体的前体。

For the synthesis of NHC precursors, there are also several routes: condensation of glyoxal, amines and paraformaldehyde; alkylation of imidazole or monosubstituted imidazole with alkyl halide; annulation of ortho esters and 1,2-diamines; ring closure of hydrazines or amides with acetic anhydride; reduction of thiones with Na/K in THF.

关于N-杂环卡宾前体的合成途径主要有：乙二醛、伯胺和多聚甲醛的缩合反应；卤代烷与咪唑及其取代咪唑的烷基化反应；原甲酸酯与1，2-二胺的成环反应；肼或酰胺与酸酐的环化反应；用Na/K对环硫脲化合物的还原反应。

Pure red cell aplasia is a haematological syndrome characterize by profound anemia and absence of erythroid precursors in the bone marrow.

纯粹红血球发育不全为血液学之症候群，其特徵为严重贫血，骨髓中缺少红血球前导细胞。

The growth behaviors of CNTs with other aromatic hydrocarbon precursors including toluene and naphthalene have also been studied.

得到了以甲苯、萘等其它芳香烃作前驱物生长碳纳米管的实验规律。

John's and St. Vitus' dancers the Bacchic choruses of the Greeks, who had their precursors in Asia Minor and as far back as Babylon and the orgiastic Sacaea.

在圣约翰节和圣维托斯节的歌舞者中，我们再见到古希腊酒神节歌队的面影，他们的前期历史溯源于小亚细亚，远至巴比伦和崇奉秘仪的萨刻亚人。

The effects of side-chain precursor-Solanesol, ubiquinone cicle precursors-phydroxybenzoic acid, and coenzyme Q0 on biosynthesis of coenzyme Q10 were studied. The feasibility of the precursors biotransformation to CoQ10 by Schizosaccharomyces promb 2.1794-23 was also disscussed in the article.

首次研究了以辅酶Q10(CoQ10)主要侧链供给前体物质－茄尼醇和醌环供给前体－羟基苯甲酸和辅酶Q0对粟酒裂殖酵母(Schizosaccharomyces promb 2.1794-23)生产CoQ10产量的影响，并对前体的转化工艺进行了初步研究。

Scripps Institute of the United States and his马克耶格尔Professor University of Virginia, the University of Utah colleagues used X-ray crystal photography, the first detailed description of the composition of the HIV virus capsid protein precursors of the hexagonal molecular structure of high-definition, they said hexagonal protein precursors such as CA VI protein oligomers.

美国斯克里普斯研究所的马克。耶格尔教授和他在弗吉尼亚大学、犹他大学的同事一起，采用X光晶体照相术，第一次详细描述了构成HIV病毒衣壳的六边形蛋白体的高清分子结构，他们称这种六边形蛋白体为CA蛋白六聚物。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。