查询词典 interconversion

Then, have explored the conformer interconversion among all glycine conformers, and discussed some arguments about glycine conformers' symmetries.

研究所有的苷氨酸构象异构体之间相互转换，并且探讨了苷氨酸构象异构体的对称性问题。

1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物；变温1H NMR和理论计算结果表明，在300 K时，葛根素和4'-丙基葛根素以单一构型存在；而7，4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体，当温度升至330 K时，两种异构体可以相互转化；通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算，确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子，并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

A new perspective is put forward that these factors are decomposed into covariation factors and interconversion factors by the different sources of information channels.

由于影响两市波动的因素复杂，提出了根据信息来源渠道将其溢出影响因素分解为共变和互变因素的新观点。

In this paper, a simple calculating method to establishthe interconversion between Eulerian angles and direction cosine by Spherical Trigonometry is presented.

为了从多个角度使用不同的手段研究旋转变换问题，本文提供了一种非常直观、简捷的计算方法，即利用"球面三角"的方法建立了用欧拉角与用方向余弦描述三维图形旋转变换的转换关系。

We assume that no interconversion takes place.

我们假设没有互变发生。

This paper presents the analyzing of the graphic file format and the interconversion.

本文主要研究了图形文件格式及其相互间的转换。

Information that would allow the interconversion of coefficients based on those two measurement techniques is lacking.

缺乏基于这种测定方法所得的系数之间互相换算的资料。

The science of the interaction or interconversion of electric and chemical phenomena.

自动分析也可因实验者的参与而得到帮助。

It is universally profits from the significance to other strategic reserve interconversion between the product form\'s reserve and the ability form\'s reserve. There is important value interconversion in the different point to the sustainable development of economic society.

产品形式的储备与能力形式的储备之间的相互转换成为可能对其他战略储备具有普遍的借鉴意义，不同形式之间的储备在不同时点的相互转换对经济社会可持续发展具有重要的价值。

However, the transformation rate from dominant stem to overtopped stem and from overtopped stem to dominant stem were the lowest. The interconversion of classified stem would increase as the stand density and the rate of L. gmelinii was going up. The altitude that classified stem mainly concentrated was less than 1000m, slope was less than 25°, aspect was south slope, position was at middle and lower, soil depth less than 17cm. The rate of no interconversion was 66.7% among overtopped stem. It should cut the overtopped stem as intermediate cutting.

优势木转被压木和被压木转优势木的转换率最低；随着林分密度和林分中落叶松比例增加，分级木相互转换数也增多；分级木转换现象主要集中在海拔＜1000m、坡度＜25°、坡向为阳坡、坡位为中下、土壤厚度＞17cm的林分中；被压木中，无转换的占66.7%，抚育采伐时应考虑伐除这些被压木。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！