查询词典 chloride

Part I, the Friedel-Crafts acylation on DAA and methyl dehydroabietic acid was carried out with acetyl chloride, benzoyl chloride or phthalic anhydride as acylating regents, anh- ydrous aluminum chloride as catalyst and with different solvents to compare with, we have got t- hree new compounds.

第一部分，分别以脱氢松香酸和脱氢松香酸甲酯为底物，乙酰氯、苯甲酰氯、邻苯二甲酸酐为酰化试剂，无水三氯化铝作催化剂，采用不同的溶剂及反应条件进行傅克酰基化反应，得到3个新化合物。

Ba0.7Sr0.3TiO3 powders are successfully prepared by the hydrothermal process where barium chloride, strontium chloride and titanium chloride are used as raw materials at 240℃ for 10 hours.

利用水热法研究了BST前驱物的初始配比、矿化剂NaOH过量浓度、水热时间和温度等条件对合成Ba0.7Sr0.3TiO3粉体的影响。

The optimal esterfication reaction conditions as following, the esterification temperature is 115℃, the initial mole ratio of benzyl chloride to sodium formate is 1:1, the volume ratio of water to benzyl chloride is 1:1, and the catalyst amount is 2% according to the quantity of benzyl chloride.

确定最佳的酯化工艺条件为：温度115℃，氯化苄与甲酸钠的摩尔比1：1，氯化苄与水的体积比1：1，催化剂量为氯化苄重量的2%。

the influence of damage caused by freeze-thaw cycles on the performance of chloride diffusion of concrete is studied by the experiments of free chloride concentration titration and chloride diffusion depth in this paper.

通过自由氯离子滴定试验和氯离子扩散深度试验研究了冻融损伤对混凝土氯离子扩散性能的影响。

Our company is a science, industry and trade as one economic entity, the main products are: chloride, polyacrylamide, basic aluminum chloride, iron chloride, quartz sand, activated carbon, anthracite filter media, Manganese sand, magnetite, pebbles and so on.

我公司是集科、工、贸为一体的经济实体，主要产品有：聚合氯化铝、聚丙烯酰胺、碱式氯化铝、聚合氯化铝铁、石英砂、活性炭、无烟煤滤料、锰砂、磁铁矿、卵石等。

Light calcium carbonate, ACC, nanometer superfine calcium carbonate, magnesium carbonate, trihydrate alumina, silica white, strontium carbonate, barium carbonate, potassium carbonate, rubberlith, rongalite, permanent white, lemery, microspheroidal catalyst, magnesium hydrate, bluestone, nickel salt, sodium molybdate, sodium chloride, potassium chloride, calcium chloride, sodium fluoride, cryolite, iron oxide red, lithium hydroxide, zirconium hydroxide, calcium phosphate, sulfur, etc.

轻质碳酸钙、活性碳酸钙、纳米级超细碳酸钙、碳酸镁、氢氧化铝、白炭黑、碳酸锶、碳酸钡、碳酸钾、立德粉、保险粉、硫酸钡、硫酸钾、微球催化剂、氢氧化镁、硫酸铜、硫酸镍、镍酸铵、钼酸钠、氯化钠、氯化钾、氯化钙、氟化钠、冰晶石、氧化铁红、氢氧化锂、氢氧化镍、氢氧化锆、磷酸钙、硫磺等。

Through the processes of grinding bastnaesite ore concentrate, mixing the ore powder with NaCO3 in the ratio of 1 to 0.1-0.4, roasting the mixture at 400-800 deg.c for 1-6 hr, elution of the roasted sand with hot water to obtain NaF, drying filtered drag after eluting NaF and mixing the dried drag with ammonium chloride, roasting the mixture at 300-600 deg.c for 1-3 hr, hot water soaking to obtain rare earth chloride solution, extraction with 20% kerosine solution of naphthenic acid, and hydrochloric acid counter extraction to obtain rare earth chloride product.

本发明涉及一种氯化铵法从氟碳铈精矿提取氯化稀土的方法，首先将氟碳铈原精矿磨细，并与NaCO 3 混合，其比例为原矿∶NaCO 3 ＝1∶0.1～0.4，混合均匀后在400℃～800℃焙烧1～6小时，焙砂用热水洗出NaF，洗出NaF的滤渣干燥后与氯化铵混合，于300℃～600℃焙烧1～3小时，再用热水浸取得到氯化稀土溶液，用20％的环烷酸煤油液萃取，再采用盐酸反萃得到氯化稀土产品。

The results show that, the chloride concentrations and diffusion coefficients are both a one-humped function of elevations (can also be the time scale of seawater infiltration), they increase with the increase of elevation until they get to the peak value, and then decrease with the increase of elevation; an evident relationship is being between the surface chloride concentrations and the wave forces acted on the concrete surface, while there is no much difference among the diffusion coefficients; the diffusion coefficients get to bigger as the depth from the concrete surface increase in the influence of the capillary structures evolution and chloride concentration, but this tendency of change was alleviated with the increase of depth.

研究结果表明：氯离子侵蚀混凝土设施的竖向分布规律为氯离子浓度、扩散系数与标高之间同为单峰函数分布，先随高程变大而变大，达到峰值后，随高程变大而减小；氯离子侵蚀混凝土设施的环向分布规律为混凝土构件表面氯离子浓度、氯离子通量与波浪力之间有明显的对应关系，波浪力越大，则表面氯离子浓度和氯离子通量越高，而扩散系数在各方位角差别不明显；由于混凝土长期服役过程中内部毛细孔隙结构演化以及氯离子浓度的影响，氯离子扩散系数随混凝土深度变大而变大，但这种变化趋势随深度逐渐趋缓。

High-density fluids include solids-free, potassium chloride, sodium chloride, calcium chloride, zinc bromide and calcium bromide formulations.

高密度液体包括无固体的氯化钾、氯化钠、氯化钙、锌、溴铵和溴化钙制剂。

The results show that, the Fick's second law based on corrosion environment should be presented; the linear isotherm of chloride binding is appropriate in concrete structures; the amounts of bound chloride in tide range area and air environment is 0.11~0.37 times of free chloride; the diffusion coefficient is 1/3 to the concrete without RAM and the effect is the best when the RAM ratio is about 15%.

研究表明：Fick第二定律仍需进一步改善，有必要根据不同侵蚀环境建立不同的侵蚀模型；用线性结合理论描述实际混凝土结构中的氯离子结合基本适用；潮差区及以空气中氯离子侵蚀为主的混凝土结构，结合氯离子占自由氯离子的相对值大致在0.11～0.37之间；掺加海水耐蚀剂混凝土的氯离子扩散系数大致可降为原来的1/3；海水耐蚀剂含量在15%左右时其提高混凝土抗氯离子渗透性能的效果最明显。

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。