带环的

Effects of the position of benzene ring on the carbon chain were also studied.

所以从理论上说，带附加基团苯环连接在靠近烷基链中间位置的长碳链烷基苯磺酸盐有可能是理想的驱油用表面活性剂的趋向。

The optimum conditions were determined as follows:the molar ratio of butyraldehyde to glycol was 1∶1.6,the mass ratio of catalyst to reactants was 0.4%,the volume of cyclohexane as the water-carrying agent was 10 mL,and the reaction time was 60 min.

结果表明，磷钨钼杂多酸对合成丁醛乙二醇缩醛有较好的催化活性，适宜的反应条件如下：n∶n=1∶1.6、催化剂用量为反应物料总质量的0.4%、带水剂环己烷用量为10 mL、反应时间为60 min。

In the Cathodoluminescence images the zircons extracted from the dioritic gneiss show good crystal morphology and clear oscillatory zoning, as is the case of magmatic zircon.

在阴极发光图像中，片麻岩中的锆石具有较好的晶形，并显示出清晰的岩浆锆石韵律环带结构。

There are various complex interactive relationships between the original system and the environment system in an expending system; therefore the band boundary becomes a gradational boundary.

在全系统中，由于本体系统与环境系统之间会产生各种各样非常复杂的相互作用关系，因而本体系统的边界就成了一个具有丰富层次的环带边界。

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公司自96年成立以来，以强大的工程技术实力和优良的品质管理，成为东莞市知名企业，在全国各地区享有极高的声誉，公司引进国外先进技术大量生产批发精雕油泥，云艺牌精雕油泥，彩色油泥，橡皮泥，胶泥，软陶泥，防水泥，模具泥，雕塑工作，烤箱，压泥机，软陶设计与制作，AB水，PU树脂，不饱合树脂，各种硅油，日本信越KF-96、二甲基硅油，乳化硅油，硅胶，矽利康，食品消泡剂、学生用橡皮泥、手板泥、彩色油泥、精雕泥、环氧AB胶，青红胶，水晶胶，目结土、软陶泥、按键胶原料、水溶性硅油、乳化硅油、日本信越钾基耐高温硅油及各种硅油、波丽水、促进剂、轻粉、硬化剂、片碱、烧碱、钛白粉、扎模带、脱脂纱布、蚊帐布、修边针、修胚枪油、修胚枪、玻璃纤维，纤维布、热溶胶、油漆消光粉、油污干洗剂、凡士林、陶瓷脱模剂、青红胶、钾肥皂、矽油、矽胶、模具胶、矽利康、回收废硅胶。。。

At 1 inch and 3 inches from one end of the sample,make circumferential cuts through the outer conductor.Do not cut the center conductor.The spacing between these cuts will be the 2 inch test section length.These cuts can be made with any device that gives smooth even cuts such as a band saw ,hacksaw or tubing cutter.

at 1英寸和3英寸的一端到另一端的范例，使环穿越外conductor.do不会削减该中心conductor.the间距之间的这些削减将是2英寸试验段length.these削减可以作出与任何装置，使顺利进行，甚至削减，例如作为一个带锯， hacksaw或油管刀具。

Then it's hopeful for us to inquire into the problem of topological classification of topological spaces,not being confined to their homotopy classification.

这篇文章就将利用平环和M|¨bius带三角剖分导出的复杂网络的研究成果来猜测新的拓扑不变量。

The composi tional change profiles of monazite demonstrate a heterogeneous distribution of e lements La, Ce, Nd, P, Th, Si, Ca and U. This was caused by the differences in geological environments, temperatures, pressures and compositions of the hy drothermal solutions.

根据微区剖面(0.18mm)元素分布曲线，指出了La、Ce、Nd、P、Th、Si、Ca和U等元素表现出8～10个微环带成分不均匀分布的特点，并认为成矿溶液的地质环境、温压和微量元素含量变化是不均匀分布的主要原因。

Magmatic activities in Cenozoic and Mesozoic focus intensively in Jiaolai basin and its vicinity,which is a part of eastern China and circum-Pacific magmatic active belt.

胶莱盆地及其周缘中新生代的岩浆活动较为强烈，是中国东部及环太平洋岩浆活动带的一部分。

Tongchang porphyry copper deposit, located in Dexing county, Jiangxi provance of southeast china, is a major deposit of famous Dexing porphyry copper ore field, which is located in the exterior zone of the Circum-Pacific Metallogenetic Belt.

德兴铜厂斑岩铜矿床是环太平洋成矿带外带组成部分，位于中国江西省德兴市境内，为著名的德兴铜矿田内的主要矿山。

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