化学

A series of copper halides in one, two, or three dimensions have been successfully synthesized such as rhomboid dimers of stoichiometry [Cu2X2L2]n, the tetranuclear species on cubane or stepped cubane tetramers of stoichiometry [Cu4X4L4]n and hexagonal[Cu6X6] grid chains.2 The main strategy in crystal engineering is a secondary building block approach.3 For a given building block, there are two routes to construct frameworks.

在一维、二维或三维的一系列卤化铜已经成功地得到了合成，比如化学计量法[Cu2X2L2]n的长菱形二聚物、化学计量法[Cu4X4L4]n和六边形[Cu6X6]网格链的在立方烷上的四核类或阶梯式立方烷四聚物。[2] 在晶体工程上的主要策略是一种次级构件途径。[3] 对于一给定的构件来说，有两条构件骨架的路线。

The so-called tetrazole chemistry has been becoming an interesting and important area attracting chemists, explosive and material researchers.

目前，有关四唑化合物的研究与应用正与日俱增，所谓&四唑化学&已成为吸引化学、材料学和炸药工作者极为重要的研究领域。

This module is integrated into large thermochemical database systems such 〓, Thermo-Calc, HSC etc.

但由于受经典化学图绘制的局限，化学位图绘制尚存在很大的不足。

The further research will enrich the theory and practice of green C1 chemistry and performance of thermodynamically unfavo-rable reactions.

该工艺为乙酸合成和CH4与CO2的绿色化学利用开辟了新途径，其研究将会丰富C1化学化工的理论与实践，并为实现热力学不利反应提供实验方法和理论依据。

Values, the chemical composition of biotite of them and their petrochemical composition on the corresponding dia grams are all distributed transitionally between the "typi cal areas"; 2 that the micro-elements indicating genesis and the REE distribution parttens display the transitional change from the mines in North to those in South in this region; 3 that their K-Ar age of biotite is distinctively inconsistent with their Rb-Sr age of total rocks; and 4 that there occur several rock body groups with various genetic features which are formed at the corresponding time in the same Pb-Zn ore fields.

具体表现在全岩锶同位素初始比值、黑云母化学成分，岩石化学成分在相应图解上不集中而呈&过渡态&分布；微量元素成因特征及稀土分配型式在本区空间上呈&过渡态&展布；岩浆分异演化过程中各种地球化学演化参数不连续变化；全岩Rb-Sr同位素年龄与黑云母K-Ar年龄值严重不合；同一矿区，普遍发育不同岩性组合的岩体群等等。因此，地洼型多因复成成岩成矿作用在湘南铅锌矿床形成过程中是一个带有普遍性的区域成矿规律。

Some problems relating to chemical characters of transuranium elements, pretreatment of samples,methods of separation and purification,selection of chemical yield tracer,and various measurement technique are discussed.

有关超铀元素的化学特性、样品的前处理、分离和提纯方法、化学产额示踪剂的选择以及各种测量技术等一些问题也进行了讨论。

The colors of barrel plating are :triatomic chromiumblue/white/colorful/black zinc, chromium with a valence of sixblue/white/colorful/black zinc, pure copper, bright nickel, chemical nickel ,black nickel ,bronze, chromium and so on; the colors of the rack plating are : triatomic chromiumblue/white/colorful/black zinc, chromium with a valence of sixblue/white/colorful/black zinc, pure copper, bright nickel, chemical nickel ,black nickel ,bronze, chromium and so on.

随着市场发展需要，公司电镀生产线迁入博罗县石湾镇，投资设立金城五金电镀厂，总面积 9000平方米，专业加工电镀各种螺丝、五金件，设备齐全，实力雄厚，滚镀的颜色有：三价铬兰/白/彩/黑锌、六价铬兰/白/彩/黑锌、红铜、亮镍、化学镍、枪黑镍、青铜、青古铜、铬等不同颜色，挂镀的颜色有：三价铬兰/白/彩/黑锌、六价铬兰/白/彩/黑锌、红铜、亮镍、化学镍、枪黑镍、青铜、青古铜、铬等颜色，镀种齐全，月生产能力可达 800 余吨。

The chemistry and technology of epoxidation of oils from silkworm pupae oil rich in linolenic acids, soybean oil rich in linoleic acids and chemical reagent grade triolein rich in oleic acids were systematically analyzed and experimentally studied.

本论文以富含亚麻酸的蚕蛹油，富含亚油酸的大豆油和富含油酸的化学纯三油酸甘油酯为原料进行了油脂环氧化反应的化学与工艺学研究。

Reversible Addition-Fragmentation Transfer polymerization; Living Free Radical Polymerization; Photoinitiate polymerization; Trithiocarbonate

工程科技I，化学，高分子化学可逆加成-断裂链转移自由基聚合；活性聚合；紫外光聚合；苯乙烯St

Although it is certain that the flower of Trollius chinensis is a good antibacterial medicine, there are no studies on its effective substances and quality standard.The 60% ethanol elution through polymide was determined as antibacterial and antivirus portion according to pharmacological study. The chemical experiment isolated 18 compounds and identified 13 structures.

本课题通过对金莲花提取物的药效学试验，确立了聚酰胺60%乙醇洗脱部位为其抗菌、抗病毒有效部位；继而对该部位进行了化学研究，分离出单体化合物18个，鉴定化学结构13个，其中有7个是从金莲花中首次发现的新化合物，有4个是从金莲花属植物首次分离得到，所分离的化合物大部分是黄酮类，还有有机酸等。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷