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All 1232 individuals collected could be classified into 3 phyla, 10 classes, and 16 orders. The dominant genera are Acari, Collembola and Hymenoptera, and the common genera is Heteroptera. Their frequencies are 41.07%, 17.21%, 35.23% and 2.11%, respectively. The rare genera included Corrodentia, Enchytraeidae, Isopoda, Diptera, Pauropoda, Symphyla, Araneae, Diplopoda, Lumbricidae, Nematoda, Coleoptera, Chilopda and Lepidoptera.

富阳环山乡重金属污染的农田生态系统中土壤动物以弹尾目和蜱螨目为优势类群,分别占总捕量的66.37%、16.72%,常见类群有双翅目的虱啮科、蠓科、摇蚊科,鞘翅目的隐翅甲科,线虫,线蚓等,它们分别占总捕量的5.81%、1.3%、1.3%、2.6%、2.3%和1.2%;其中,弹尾目中的优势属为符属和陷等属,分别占虫总捕量的33.03%和21.2%;常见属为棘属、陷等属、德属和原等属,分别占总捕量的4.3%、1.3%和3.21%。

This paper analyzes the Michelson interference and presents a method to measure circle diameter of interfering images using image sensor and computer.

通过对迈克耳孙干涉图样的研究,提出了应用图像传感器和计算机测量圆环直径的方法,该方法也适用于牛顿环等光学实验的图样的分析。

My company is the professional manufacturer that produces electric machinery fittings, come for years, produce a variety of model (a variety of model such as Y, Y2, YZR, JZR, YR, JR, ZQ, YB, QF, JZS) leaf of qualitative wind of leaf of electric machinery aluminous wind, iron, plastic wind leaf, gold of wide application Yu Ye, mine, generate electricity, chemical industry, railroad, mechanical production domain, produce all sorts of model collector ring at the same time , carbon brush

我企业是岀产电机组件的职业公司,多年以来,岀产多类规格(Y、Y2、YZR、JZR、YR、JR、ZQ、YB、QF、JZS等多类规格)电机铝风叶、铁质风叶、塑胶风叶,普遍运用于冶炼、矿石、发电、化工、火车路、机器创造范围,同时岀产各类规格集电环、炭刷、炭刷架电刷架、恒压簧、风罩、端盖、接电话板、接电话盒、换向器、刷秆、吊环、保险片等,制品共2000余种标准;且可依据使用者请求策划开拓制造异型制品,同时供应各类健材件加工业制造业务。

In this paper, the synthesis ways and applications of 4,5-dimethyl-l,3-dioxolen -2-one were introduced. An appropriate way synthesizing DMDO from acetoin via acylation, cyclization and dehydrochlorination was selected. The influences of various process conditions on the reaction were studied in detail, and the optimum process conditions were obtained by single factor experiments.

本文介绍了医药中间体4,5-二甲基-1,3-二氧杂环戊烯-2-酮的应用情况和合成路线,选择了适于工业化生产的工艺路线,即采用羟基丁酮为原料,经酰化、环合和脱氯化氢等步骤合成DMDO,并采用单因素试验法详细研究了各项工艺条件对反应结果的影响规律,确定了优化工艺条件。

The preparation and characterization of a novel Ru-Zn catalyst for selective hydrogenation of benzene to cyclohexene have been carried out in this paper.

苯选择加氢制环己烯具有原子经济性和环境友好等特点,开展苯选择加氢制环己烯催化剂的研究具有重要的应用价值和一定的学术意义。

Thus, introduction of statine has become an efficient strategy for the the design of aspartic protease inhibitors.The unique properties of the ferrocenyl group has made ferrocene and its derivatives very popular molecules for biological applications.Among them there are compounds with antiproliferative effect,antibiotics,pesticidal activity,ect.

二茂铁自被合成以来因其具有许多独特的性质而受到广发的应用,许多二茂铁化合物具有抗菌、抗肿瘤、杀虫等活性,用它取代具有生物活性分子中某些芳香环或杂环可以提高整个分子的活性。

The main points of thedissertations are summarized as follows:1、Synthesis of TAP-BTE zinc complex with photochromic property and its application in non-destructive readoutA photochromic 1,2-bisthienylethenes substituted tetraazaporphyrinato zinc complex, 2,3,7,8,12,13,17,18-octakis(2\',4\',5\'-trimethyl-3\'-thienyl)tetraazaporphyrizine zinc,was synthesized by "one-pot" reaction,and was characterized by spectroscopic methods as well as the elemental analysis.

本论文的研究目的在于如何将二噻吩乙烯基团连接到卟啉、酞菁等大环分子上面,这一方面有利于光致变色性能的提升,另一方面也使得基于大环分子π-π作用的分子自组装成为可能。

In summary, the dissertation has improved the traditional geometric design methods for the high-speed circuit in the aspects of design index system, plan design, transection design and the 3-diamension-design technology on the basis of summarizing the experience of design, construction and operation of the high-speed circuits all over the world.

总之,本论文在总结世界各国高速环道设计、施工和运营经验的基础上,从设计指标体系、平面及横断面设计方法、三维一体化设计技术等多方面对传统的高速环道几何设计方法进行了较大的改进和完善。

To solve the existing problems concerning cone bottom bricks, quenching ring and the vertical pipe in Chinese-built coal gasifiers based on coal-water slurry, countermeasures were put forward from the aspects of technical innovation, operation and equipment management.

针对国产化大氮肥水煤浆气化炉中锥底砖、激冷环和下降筒使用过程中出现的问题,分析了损毁原因,分别从技术改进、工艺操作和设备管理等方面提出了相应的解决对策,可以不同程度地延长锥底砖、激冷环、下降筒的寿命。

Recently the consumption structure of the sweetening agent has taken place great changes and the market demands are growing rapidly. Meanwhile, the domestic export quantities and the demands from the fruit sweetener and medicinal preparation for the sweetening agents keep growing tendency. It is estimated that in the next few years the demands of the sodium cyclamate for the cyclohexylamine will keep a speed of 8-10% per year and the cyclohexylamine consumed by the sodium cyclamate will be 14-15 thousand tons.

近年来国内甜味剂消费结构发生较大变化,甜蜜素市场需求增长迅速,同时国内产品出口保持稳定增长态势,此外在水果甜剂、药物制剂等方面对甜蜜素的需求也呈现较快增长势头,预计未来几年甜蜜素对环己胺的需求将保持年均8%-10%的增速,2010年甜蜜素生产约消耗环己胺1.4万-1.5万吨。

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