查询词典 potassium acid carbonate

The current market price of the light calcium carbonate in China is around 500 to 650 RMB per ton, while the price of light calcium carbonate for ultrafine ink production is 1800 to 2000 RMB per ton.

目前我国市场普通轻质碳酸钙的价格为500～650元/t，活性轻质碳酸钙价格为800～1200元/t，油墨用超细轻质碳酸钙价格为1800～2000元/t。

It is suggested to be classified two kinds as heavy calcium carbonate and light calcium carbonate according to processing methods and average particle size.

建议按产品加工方法及其平均粒径大小分为轻质和重质两大类。

Nano-calcium carbonate was compared with carbon black N330,white carbon black and light calcium carbonate,at the same time,the effection of process property,process oil and different surface preparative ways on rubber properties was studied.

并将纳米碳酸钙与炭黑N330、白炭黑和轻质碳酸钙的性能进行对比，同时考查了工艺性能、操作油以及纳米碳酸钙的不同表面处理方式对胶料性能的影响。

Sodium chloride-common table salt-is the most familiar salt; sodium bi carbonate, silver nitrate, and calcium carbonate are others.

氯化钠是最熟悉的盐；其它熟悉的盐类有碳酸氢钠、硝酸银以及碳酸钙。

On the basis of it, fully utilizing reservoir prediction new means such as coherent data cube analysis and seismic attribute analysis etc. as to geophysical characteristic of fissure and carven development of carbonate reservoir and seismic reversion variation after hydrocarbon-bearing, combined with stress analysis, gradually summarized a set of auxiliary method of predicting the fissure and carven of carbonate reservoir to service exploration and development of the field.

在此基础上，根据碳酸盐岩储层缝洞发育及含油气后地震反射发生变化的地球物理特征，充分利用地震相干数据体、地震属性分析、特征参数反演等储层预测手段，结合应力分析，探索和总结预测碳酸盐岩储层的岩性和缝、洞发育情况的地球物理方法，用于油田勘探开发。

Chernozem layer with the topography and different degrees of surface evaporation, there is meadow chernozem (humus content was high, a large number of stain and iron-TB), carbonate Black calcium soil (surface with carbonate accumulation) and the black soil salinity and the saline soil.

黑钙土层随地势和地表蒸发程度的不同，有草甸黑钙土（腐殖质含量高，有大量锈斑和铁质结核）、碳酸盐黑钙土和盐渍化黑土和盐渍土。

Through analyzing the contour map of soil spatial variability, the same changing law was found in soil organic matter and calcium carbonate content in the horizon direction, which showed that higher soil organic matter and calcium carbonate content appeared in the points closer to the village, forming a concentric circle.

经过对土壤特性空间分布等值线图的分析得出：在水平方向上，土壤有机质和碳酸钙均具有相同的变异规律，距离村庄越近土壤有机质和碳酸钙含量越高，以村庄为回心土壤有机质和碳酸钙含量呈同心圆式的空间变异特征。

Hybrids of carbonate and terrigenous sediments Carbonate with terrigenous sediments are of characteristic from Emsian to Eifelian in stable shallow-sea faciesregion in Longmenshan area, and they can be classified evidently into hybrid Ⅰ and hybrid Ⅱ(Jingbaoshi-type). Type Ⅰ produced in mud shelf setting occupied hundreds of tempestite beds in which bottom cast、 hummocky cross bedding sandstones、 coquina were inter-beddded with shales that beared a great deal of verm traces、 bioturbations、 benthic communities dominative of brachiopods. Type Ⅱ in sand-mud-marl shelf was characterized by high-energy foreshore sandbeach facies and shelly bank facies.

碳酸盐与陆源碎屑混合沉积方面对微相、相特征、旋回样式、沉积机理研究表明，龙门山地区泥盆纪稳定浅海相区Emsian期和Eifelian期混合沉积十分发育，颇具特色，明显可以划分为两种类型：混积Ⅰ型，泥质陆棚背景下发育风暴沉积组构，幕式风暴期产生具丘状层理、底流冲刷构造的钙质砂岩、介壳岩，平息期则形成具大量虫管和生物扰动的深灰色、黄绿色页岩及海百合茎灰岩，腕足动物等大量繁盛；混积Ⅱ型，砂泥灰质陆棚背景下以发育高能前滨沙滩及生物介屑滩为特色，近滨至陆棚的砂泥灰互为混合，三者比例接近，肉眼难以区别确切岩石类型。

The transesterification of DMC and phenol for diphenyl carbonate and methyl phenyl carbonate synthesis has been studied in this thesis.

本论文对碳酸二甲酯和苯酚酯交换法合成碳酸二苯酯及其中间体碳酸甲苯酯的反应进行了研究。

Clean synthesis of diphenyl carbonate by transesterification of phenol and dimethyl carbonate has been studied.

针对苯酚与碳酸二甲酯酯交换法合成碳酸二苯酯洁净催化反应过程进行了较系统的研究。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。