查询词典 carbonate

Barium carbonate crystal with fiber structure was prepared from malonic acid.

以丙二酸做为调控剂，得到纤维状的碳酸钡晶体。

The result indicates that the poach dissipation of ceramics can be reduced when low impurity constant barium carbonate raw material with spheroidal particles is used;and the relationship of dielectric constant to temperature is more stabilized.

结果表明，杂质含量低、球形颗粒的碳酸钡原料能显著降低陶瓷的水煮损耗，但陶瓷水煮损耗异常和其致密性不存在对应关系。

For comparison, ordinary aqueous precipitation method was used to prepare barium carbonate by using Ba(NO3)2 and NH4HCO3 as the reactants. The influences of adding sequence of the reactants and surfactant et al. on the products were discussed.

此外，以Ba(NO_3)_2与NH_4HCO_3为反应起始物，采用沉淀法研究了制备BaCO_3的影响因素，考察了加料方式、表面活性剂等因素对产物形貌的影响。

In order to realize the solvent-free preparation and to reduce the reaction time,the preparation of barium carbonate by solid state reaction at low heating temperatures under supersonic airstream was studied.

为了实现无溶剂制备及缩短反应时间，研究了在超音速气流下低热固相反应制备碳酸钡。

By comparing the rotary disc dryer with other dryers, it pointed that a rotary disc dryer can reduce operation cost and improve product quality in production of high purity barium carbonate .

对盘式干燥机的工作原理、结构特点进行了详细介绍，并将其它干燥设备和盘式干燥机作了对比，指出高纯碳酸钡行业采用盘式干燥机可以将生产成本降到最低限度，而产品质量可以得到很大提高。

The experimental results showed that the raw materials can be totally conversed when reacted for 45 min;and the average size of prepared barium carbonate was 1 μm.It also discovered that crystal water was not feasible for accelerating the reaction speed and increasing the degree of crystallization.

试验结果表明：反应45 min原料即可完全转化，制备的碳酸钡颗粒平均尺寸约1 μm，并且发现利用结晶水加快反应速度、提高产物结晶程度是不可行的。

In the preparation of high purity barium carbonate , exist some problems related with metal oxide pollution, control of the amount of the material to be added, moisture content higher then the standard, etc.

为解决高纯碳酸钡生产干燥过程中金属氧化物的污染、入料量不易控制、成品水分超标等生产难题，通过对所用电动离心喷雾干燥机辅助设备、控制系统的改进及干燥状态参数的确定，使高纯碳酸钡产品质量明显提高，其中：w≤5？06，w(H2O)≤0.1%，完全满足PTC用户的要求。

The phosphors were obtained by the high temperature solid state reaction method and sol-gel method with barium carbonate, aluminium hydrate and manganese dioxide.

本文以碳酸钡，氢氧化铝，二氧化锰及稀土元素等为原料，通过高温固相和溶胶凝胶两种方法合成绿色荧光粉。

The experimental results show that, by the process, 10 kg barium carbonate with 0.1 L hydrochloric acid (HCl 27%) as catalyst is added in 1 m3 copper electrolyte, 70% Bi can be removed from the electrolyte, and the Bi content in filter residue is more than 4%.

实验结果表明，采用碳酸钡脱铋新工艺， 1 m3铜电解液加入10 kg碳酸钡，用0.1 L盐酸(HCl 27%)作催化剂， Bi的脱除率可达70%，脱铋渣含Bi量大于4%。

From 93 to begin production barium hydroxide products so far, the company re-technology, and management is the production of "Pui-yu," licensing eight water barium hydroxide, a water barium hydroxide powder, a crystal water barium hydroxide, barium borate partial , barium carbonate, thiourea, and other products exported to the United States, Japan, Europe, South Africa, Southeast Asia, Taiwan, and other countries and regions.

从93年开始生产氢氧化钡产品至今，公司重科技、抓管理，现生产的"榆贝"牌八水氢氧化钡、粉体一水氢氧化钡、晶体一水氢氧化钡、偏硼酸钡、碳酸钡、硫脲等产品，远销美国、日本、欧洲、南非、东南亚、台湾等国家和地区。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。