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Two coordination polymers [Pb6(H2O)24]·3H2O(1)(H3cit=citric acid)and Pb(H2O)2(2)(tar=tartaric acid)were synthesized under hydrothermal conditions and characterized via IR,TG-DTA,C,H,N elemental analysis,XRD and single crystal X-ray diffraction analysis.

在水热条件下，合成了2个含柔性配体柠檬酸和酒石酸的二价铅配位聚合物[Pb6(H2O)24]。3H2O(1)(H3cit=citricacid)及Pb(H2O)2(2)(tar=tartaricacid)。用红外光谱、差热-热重、元素分析、粉末X射线衍射及单晶X射线衍射等手段对化合物进行了表征。化合物1属三斜晶系，P1空间群，a=0.97053(19)nm，b=0.9764(2)nm，c=1.0955(2)nm，α=109.016(3)°，β=98.380(3)°，γ=92.136(3)°，V=0.9671(3)nm3，Z=2，R1=0.0420，wR2=0.1049，GOF=1.064。

Then quality upgrading scheme was explored in order to solve the high content of sulphur and nitrogen in pyrolytic oil, low flash point as well. Yields of pyrolysis of scrap tires in a pilot-scale rotary kiln under 550℃were firstly summarized. Then elemental composition and physiochemical properties were analyzed on both pyrolytic crude oil and its fractions. Based on these researches, the feasibility that pyrolytic oil is used as fuel was discussed. From FT-IR spectra the functional group compounds were generally acquainted, and by column chromatography analysis chemical compositions were clearly known. Then through GC analysis the absolute content of BTX in pyrolytic crude oil was defined.

本文首先考察了中试回转窑550℃下的废轮胎热解产率及热解原油的元素组成和理化特性，对其作为燃料使用的可行性进行了分析；通过实沸点蒸馏研究了轻质、中质馏分热解油的基本特性：红外分析得出了有代表性馏分热解油的大致官能团组成形式，对热解油的强芳香性和部分不饱和性有了整体了解；化学族组成分析进一步了解了热解油内在化学族组成和含量，对热解油的内在性质有了更为深入理解；气相色谱分析对热解油中富含的苯、甲苯和二甲苯进行绝对定量，为热解油提取BTX化工原料的经济性提供了参考。

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明显线性段的金属及其它材料，弹性极限大致就等于比列极限。

The modified products were analyzed by FT-IR. Softening point, solubility in solvent and n-heptane tolerance were also studied.

对改性产品进行了GPC、FT-IR的表征分析及其软化点、脂肪烃溶解性和溶剂溶解性能等的研究。

The modified product was analyzed by FT-IR and GPC,and softening point,solubility in solvent and n-heptane tolerance were also studied.

对改性产品进行了GPC、FT-IR的表征分析及其软化点、庚烷容纳度和溶剂溶解性能等的研究。

Epoxysuccinic acid was synthesized from maleic anhydride using sodium tungstate as catalyst and hydrogen peroxide as oxidizer and was characterized by IR and 13 C NMR.

以马来酐为原料，钨酸钠为催化剂，双氧水为氧化剂，合成了环氧琥珀酸，并对其进行了红外、13C核磁表征。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings.

设计并研究探讨了近50个酞菁化合物的几何构型、电子结构、光谱性质和热力学性质。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings.

设计并研究探讨了近50个菁化合物的几何构型、电子结构、光谱性质和热力学性质。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings. CPHF and ZINDO are the most popular methods to study the non-linear optical and excited state properties, respectively.

ZINDO和CPHF分别是计算激发态和NLO极化率的最常用方法之一，本文用ZINDO计算了部分化合物的激发态，得到了紫外可见光谱图，用CPHF/3-21G方法研究了近20个不同取代基和不同金属的菁化合物的NLO性质。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings. CPHF and ZINDO are the most popular methods to study the non-linear optical and excited state properties, respectively.

ZINDO和CPHF分别是计算激发态和NLO极化率的最常用方法之一，本文用ZINDO计算了部分化合物的激发态，得到了紫外可见光(来源：Aeb8bBC论文网www.abclunwen.com)谱图，用CPHF/3—21G方法研究了近20个不同取代基和不同金属的酞菁化合物的NLO性质。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。