The six-membered rings exhibit slightly distorted chair, extremely distorted chair and half-chair conformation respectively.

六元环分别呈现微扭曲的椅式构象、严重扭曲的椅式构象及半椅式构象。

Then I re-membered the guns which made a lot of smoke.

这时我想起枪可以产生很多烟雾。

The six-membered ring of each kind of metals is the most stable.

三种元素的六员环短-长键交替结构都是各自环簇中最稳定的结构。

Compound 6 is a 1d double helical chain containing 20-membered rings (6).

化合物6是一维的双螺旋结构，由20元环状结构单元组成。

If you are in 3 membered family, you would spend a lot of money on mobile phone.

如果您的家庭有3位家庭成员，你将会为之承担很大一笔开销。作文地带有翻译的英语作文网站。

Two 7 - membered ring derivatives of S-(-)-2,2'- binaphthyl - diol, were synthesized.

以S-（-）-2，2’-联二萘酚为手性模板分子，合成出了它的两个七元环衍生物。

Q1 represents optionally substituted, saturated or unsaturated 5- or 6-membered hydrocarbyl, etc.

Q 1 是可被取代的饱和或不饱和的5-或6-元环烃基等；

This article reviews the ring opening reaction of five membered nitrogen containing heterocyclic compounds.

综述了近年来各种五元氮杂环的开环反应及其在有机合成中的应用。

The result shows that the transition state of the rearrangement reaction has a three-membered ring structure.

结果表明，该重排反应经过一个三元环过渡态。

Compounds having five-membered heterocyclic rings include chlorophyll, hemoglobin, indigo, tryptophan, and certain polymers.

五种成分的杂环化合物有叶绿素、血红蛋白、靛蓝、色氨酸和特定的聚合物。

At this st age they are also more cautious about their judgments -but first candidates do have the advantage of being re membered.

在这个阶段，他们作判断时也会更为慎重，不过，排在最前面的面试者的优势在于他们比较容易被记住。

The obtained results show the isomerization reaction first forms a four membered ring transition state and then the product is got.

研究结果表明该异构化反应先形成一个四元环过渡态而后转变为产物。

These results show that the mechanism of the decomposition is basically the concerted process of the 6-membered cyclic fragmentation.

结果表明，亚甲基二硝胺的热分解为六元环环状协同裂解历程。

The progresses in five-membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed.

综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用。

Tetronic acid, tetronic amine and their derivatives are five-membered heterocyclic compounds along with bio- and pharmacological activities.

特窗酸、特窗胺及其衍生物均是生物活性很高的五员杂环化合物，具有重要的研究与实用价值。

Purine a simple nitrogenous organic molecule with a double-ring structure? A 6-membered pyrimidine ring fused to a 5-membered imidazole ring.

一种简单的含氮有机分子，具一个双环结构——六元嘧啶环融合成一个五元咪唑环。

Maurice stared after the housemaster's wife, underwent a violent repulsion from her, and blushed crimson: he had re-membered Mr Ducie's diagrams.

莫瑞斯凝视着舍监太太的背影，对她产生了强烈的厌恶感，满脸涨得通红。他记起了杜希先生画的那些示意图。

Therefore, it is the reducing end and will be in equilibrium with alpha and beta six-membered ring forms, AS described earlier for monosaccharides.

因此如前面单糖部分所述，它是还原性末端。会形成六元环形式的平衡。

The calculated results show that the aza Wittig reaction is a two step reaction, having one four membered ring intermediate on its reaction surface.

计算结果表明该反应是一个二步反应，在反应途径上存在一个四元环中间体。

An epoxide group and an out-ring double-bond are attached to the 11-membered ring. The molecule contains one primary and two tertiary hydroxyl groups.

十一员环上带有一个环氧基和一个环外双键，分子中含有两个叔羟基和一个伯羟基。

Some of the acetone and methanol molecules are formed with such a complex possessed a six-membered ring-like structure involving non-linear hydrogen bond.

一些丙酮与甲醇分子之间形成具有非线性氢键结合的六元环结构。

Six-membered silacycles are a class of important cyclic compounds in organosilicon chemistry, which have many applications in organic, organometallic, and polymer chemistry.

硅杂六元环化合物在有机硅化学中是一类重要的小分子环系化合物， 广泛应用于有机化学， 金属有机化学以及材料化学等领域。

H atom of phenolic hydroxyl in the ligand was attractive to N atom forming intramolecular hydrogen bond, and a new six-membered ring was formed by the hydrogen bond connection.

配体中酚羟基上的H原子与N原子相吸形成了分子内氢键，并以氢键连接构成了一个新六元环。

The experience relationship between fin-height and rough tube wall-thickness for cold-drawn outer-spiral-fin tube is established with many-membered Iinear regression in this paper.

利用多元线性回归建立了冷拔外螺纹铜管凸筋高度与坯料壁厚之间的经验关系式。

The six-membered rings exhibit slightly distorted chair, extremely distorted chair and half-chair conformation respectively, and the five-membered ring exhibits an envelope conformation.

其中六元环分别呈现微扭曲的椅式构象、严重扭曲的椅式构象及半椅式构象；

All transition states, activation energies and potential curves of four possible reaction paths were obtained. It was found that the homolysis of n-no2 bond in five-membered ring is the initial step.

求得可能的四种不同热解反应通道的过渡态、活化能和位能曲线，发现其热解引发步骤为五元环上侧链n—NO2键的均裂。