查询词典 additives

The main results of investigation are as follows:(1) By hot-pressing sintering with equimolar Y2O3 and La2O3 as additives, a dense in-situ toughened Si3N4 is prepared.

1选择等摩尔Y_2O_3和La_2O_3作为烧结助剂，利用热压烧结的方法制备致密的自增韧Si_3N_4陶瓷，其相对密度高达99.8％，在1800～1840℃烧结1～2h可得到相对密度超过99％的Si_3N_4。

The results show that under the follow conditions: pyrolysis temperature 270癈,active carbon and: ethyne black=9:l, carbon pretreated with HNOs, 7.18% Mn(NO3)2(vs. carbon support) catalyst can exhibit the best performance. In order to improve the electrocatalystic performance of MnO2, Pb(CH3COO)2 , La(NO3)3-6H2O and Ce(NO3)3-6H2O are chosen as additives of MnCVC air electrode . Electrochemical performance of the electrodes is studied by current-potential polarization curves.

为了提高催化剂的性能，选择了醋酸铅、稀土作为添加剂，采用稳态极化和交流阻抗测试方法，结果表明：铅的氧化物、稀土La和Ce可作为MnO_2催化剂的助剂来促进氧气还原反应的进行，醋酸铅添加7.5％时极化最小，在一般金属-空气电池的工作电流密度20～50mA／cm~(-2)下，电位比单独MnO_2催化剂可提升30～50mV。

This investigation was conducted to screen facultatively anaerobic cellulolytic bacteria separated from cow ruminal fluid for exploiting Microbial Feed Additives.

从奶牛瘤胃液中分离出具有分解纤维素能力的兼性厌氧细菌，用于绿色粗饲料微生物添加剂的研发。

The extraction and stability of the pigments in Tussilago farfara L. were studied. The experimental results showed that the pigments could be solved in acetone. The stability of the pigments is good when pH is within 3~9; the oxidizing agents, reducing agents and common food additives have little influence on its stability; it is react too much with Fe(superscript 3+) ion, and Na(superscript +) ion showed a certain increment effect on the color; the heat performance of the pigments is good when under 60℃.

研究了款冬花色素的热稳定性、氧化还原稳定性和pH值稳定性，并对常用的几种食品添加剂对款冬花色素的稳定性进行了探讨，结果表明：款冬花色素易溶于丙酮，属于脂溶性色素；在pH＝3～9时，款冬花色素的稳定性较好；氧化还原剂及食品添加剂对其稳定性影响不大，Fe(上标 3+)金属离子对其影响显著，Na有增色作用；水浴温度在60℃以下色素的热稳定性较好。

A smooth channel for the company the stability of raw materials, the United States Exxon, Ssangyong, Japan Energy, Taiwan and China Petroleum and Shell are in Forfar lube base oil suppliers, the United States Lubrizol, Ethyl Corporation is the supply of lubricant additives Forfar business.

公司原料渠道畅通稳定，美国埃克森、韩国双龙、日本能源、台湾中壳及中国石油都是科发润滑油基础油供应商，美国路博润、乙基公司是科发润滑油添加剂供应商。

Polartech specializes in the supply of Metalworking fluids, additives, packages, related products and formulatory expertise to lubricant and chemical manufacturing and marketing companies worldwide.

Polartech专业致力于向全球润滑剂和化工加工及经销商提供金属加工油、添加剂、包装及其相关产品和专业配方技术。

They can be incorporated into formulations of the fungicidal compounds or be added to spray mixtures as separately formualted additives in order to improve the efficacy and spectrum of these fungicides.

它们可掺入杀真菌化合物的配制剂中或以单独配制的添加剂加入喷雾混合物中，以改进这些杀真菌的效力和作用谱。

The addition of SiCN powder to Sialon increases the glutinosity of glass formed during sintering process by additives and SiO2 film on the surface of Si3N4, and lowers the sintering densities of the samples.

SiCN／Sialon复合材料复介电常数的实部和虚部均随纳米SiCN含量的升高而增大，但是低于预期值，其原因是由于长时间高温烧结时，纳米SiCN结构发生变化，其复介电常数的实部和虚部大幅度下降造成。

Flavonoids of glycyrrhiza were very important compounds, which could be used in pharmaceuticals、food additives and cosmetics and so on.

甘草黄酮是一类极其重要的化合物，可用于医药、食品添加剂、化妆品等领域。

Under the influence of the sunlight and with the help of its strong oxidization capacity, the photo-catalyst can oxidize nearly all the organic matters on the surface into H 2 O and the corresponding nontoxic inorganic materials. At the same time, under the combined actions of the characteristic nanometer structure of its surface, the hydroscopic properties of the complex additives and the light-induced amphiphilic properties (hydrophilicity and lipophilicity) of Ti02 itself the surface of the glass is made superhydrophilic, so that it becomes easily washable, anti-fog and not vulnerable to recontamination to keep the glass clean and transparent. And it also has such functions as sanitization, sterilization, foreign odor elimination and air refreshing.

在阳光的作用下，光催化剂以其特有的强氧化能力，可将其表面的几乎所有有机物完全氧化为H 20及相应的无害无机物，同时在其表面特有的纳米结构、复合添加剂的吸水性和Ti02本身的光致两亲性的共同作用下使玻璃表面具有超亲水性，变得易清洗、防雾和不易被再污染而保持洁净透明，同时具有消毒、杀菌、消除异味、清新空气等功能。

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。