查询词典 ir

Our proxy product includes: SEMKRON; SIEMENS; SanKen; SANRex; FUJI; TOSHIBA; MITSUBISHI; Eupec; HITACHI; IXYS; IR; NIPPON; VICOR; LAMBDA; And so on the overseas well-known company produces GTR, IGBT, IPM,PIM, the silicon-controlled rectifier, the crystal thyratron, quicklyrestore the diode, the rectification bridge.

我们的代理产品有：三菱、三社、三垦、富士、东芝、西门子、西门康、摩托罗拉、IR、EUPEC、IXYS等国外知名公司生产的GTR、IGBT、IPM、PIM、可控硅、晶闸管、快恢复二极管、整流桥。

Compounds 1~8 have been characterized by elemental analysis, IR spectra and X-ray crystallography.

配合物1，4，5和6均为三维聚合结构，而2和3则具有双链结构。

The complex was characterized through IR and elemental analysis and its crystal structure determined with X-ray crystallography.

对该配合物进行了红外光谱和元素分析表征，并对其进行了X-射线单晶结构测定。

All of them have been structurally determined by IR, elemental analyses and X-ray crystallography.

应用红外、元素分析以及X-射线衍射技术对这些配合物的结构进行表征。

IR spectra indicated complexes (5),(6) and (7) were similar to CuA site of dopamine ??

由红外光谱指出化合物(5)，(6)及(7)的异氰基讯号比较接近D？

In the titration experiment of NMR and IR spectroscopy, we can understand how sensors binding with metal ions: the two carbonyl group and crown ether group cooperated in binding with metal ions. Furthermore, by altering the "oxygen" atoms of crown ether to "sulfur", we can change the binding affinity to the soft metal: cupper. It shows 60-fold enhancement of fluorescence.

在化合物2中，我们引进了硫原子在冠状醚中，则应对电子密度较低之金属有较好的结合能力，实验结果显示了此分子对铜离子有相当好的选择性和结合能力，萤光增加可达60倍；同时由红外光吸收光谱和核磁共振光谱滴定实验可确知，香豆素衍生物上的两个羰基对金属离子的选择性及结合上扮演相当重要的角色。

The influence of a transition metal acetylacetone catalyst on the behavior, mechanism and product structure of the co-curing of epoxy and cyanate was studied by DSC and FT-IR.

应用DSC、FT-IR对乙酰丙酮过渡金属络合物催化促进的环氧树酯与氰酸酯共固化反应行为、历程以及固化物的结构特征进行了研究探讨。

A cationic near-IR cyanine was used as a chromic probe and its binding reaction with nucleic acids was studied.

以阳离子型近红外花菁染料做为生色探针，研究了该染料与核酸的结合反应。

Two ferrocenyl and trimethylsilyl substituted cyanohydrin ethers have been prepared by the addition of trimethysilyl cyanide to two acetyl-substituted ferrocenes: 1-(1-cyano-1-trimethylsilyloxyethyl)-ferrocene (1) and 1, 1'-bis(l-cyano-1-trimethylsilyloxyethyl)ferrocene (2). The structures of these two compounds were characterized by elemental analysis, IR, 1H NMR and X-ray crystallography.

通过两种取代的乙酰基二茂铁与三甲基氰硅烷的加成反应，得到两种取代二茂铁基三甲基硅烷基氰醇醚的晶体：1-（1-氰基－1-三甲基硅烷氧基乙烷基）二茂铁(1)，1，1-二（1-氰基－1-三甲基硅烷氧基乙烷基）二茂铁(2)，用X射线单晶衍射、元素分析、红外光谱和核磁共振氢谱对分子结构进行了表征。

We conducted a series of experiments to research on electrode materials, electrolytes, preparation and assemble techniques and other related techniques with the aids of the measure methods such as cyclic voltammetric measurements, constant charge/discharge measurements, X-rays diffraction, transmission electronic microscope measurements, IR and so on.

我们采用了循环伏安、恒流充放电、X射线衍射、透射电子显微镜、差热、红外光谱等实验方法和测试手段对超大容量电容器的电极物质的制备、电解质溶液的选取、正负极之间的搭配、组装技术的优化等问题展开了一系列研究。

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。