查询词典 spiro

The spiro [4,5] decane is not only synthetically challenging but has great value to perfume, soap, and cosmatic industries because of the pleasant fragrance of the title compound.

旋环状[4，5]癸烷不仅具有高难度的化学合成，且其具有芳香气味，所以也是香水，香皂和化妆品工业的原料。

A new type of spiro crosslinking agent,3,11 dimethylene 2,10 dione 1,4,9,12 tetraoxodispirobutadecane(2),was synthesized successfully.

合成了一种新型螺环环丙烯酸酯交联剂-3，11-二亚甲基-2，10-二酮-1，4，9，12-四氧二螺［4，2，4，2］十四烷（2）。

In the first part, four three-dimensionally architectured molecules with spiro-annulated structural features were facilely developed.

在第一部分工作中，我们设计并合成了四个三维螺环蓝光分子。

In chapter 5, the application of spiro-formed rhodamine B hydrazide as a novel fluorescent probe was studied.

第五章研究了新型荧光探针RBH在生物活性自由基及其它分析领域的应用。

There six chapters in this dissertation: the overview on the study of probing for reactive oxygen species, spin-labelled fluorophore as probe for free radicals, Fe -EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability, study of fluorimetric method for the determination of peroxynitrite, study of spiro-formed rhodamine B hydrazide as a novel fluorescent probe in analytical chemistry, the conclusion and prospect of the present research work.

本论文分六章，包括生物活性氧表征的研究进展、自旋标记荧光探针表征自由基的研究、利用Fe-EDTA引发对苯二甲酸芳环羟基化反应评价抗氧化剂清除羟基自由基能力的研究、荧光法表征过氧亚硝酸根的研究、螺环型罗丹明B酰肼化合物作为新型荧光探针的性质及应用的研究、结论与展望。

The forming mechanism of dihydrophenophosphazine by the interaction of Ph〓NH and PCl〓 was studied, and the possible forming mechanism of spiro phosphonium chloride in the same reaction system was also proposed.

讨论了二苯胺与三氯化磷的成环机理以及反应过程中螺磷杂环化合物的形成机制，提出5，10-二氢磷杂吖嗪-10-氧化物存在类"烯醇—酮式"互变异构现象。

This thesis is aimming at the synthetic study of Cephalotaxine, construction of Stenine skeleton and consists of the following three parts:In Charpter 1 the isolation, chemical structure identification, biological activities of Cephalotaxine was described and reviewed total synthesis of Cephalotaxine via spiro compound.

本论文以三尖杉碱的合成及百部碱骨架的构筑为研究核心，共分为以下三部分内容。

He arrived in 1973 fresh from a job as speechwriter and campaign strategist for Nixon and his veep, Spiro Agnew, after an energetic earlier career as a flack, or public-relations man.

该词来自第二次世界大战，本是描述德军防空炮弹爆炸时产生的浓烟，后来就转指赛菲尔先生和其公关业同行所提供的自吹自擂的信息或夸张的表演。

2,7-di-diphenylamine-spiro[fiuorene -7,9'-benzofluorene] was successfully synthesized .Its structure was determined by 1HNMR、MS、IR and Elemental Analysis.Yield of each reaction was more than 70%.

设计并合成了一种新型的含二苯胺基团的螺芴化合物2，7-双二苯胺-螺环-[芴-7，9'-苯并芴]，并通过了1HNMR、MS、IR、元素分析图谱检验，每步反应的产率均在70%以上。

Fellini's "Nights of Cabiria""Dum Spiro Spero"- While there's life there's hope.

费里尼的&Cabiria之夜&--&达姆弹斯皮罗-斯佩罗&--有生命就有希望。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失