碳酸钡

Recent research advance in preparation of ultrafine barium carbonate and strontium carbonate is summarized.

综述了超细碳酸钡和碳酸锶制备方面的研究进展。

The process quality and using result of high purity barium carbonate prepared with barium hydroxide have been introduced.

介绍八水氢氧化钡制取高纯碳酸钡的工艺、产品质量及用户使用结果。

Using barium hydroxide octahydrate and urea as raw material,barium carbonate is prepared by homogeneous precipitation method.

以八水氢氧化钡和尿素为原料，采用均相沉淀法制备了碳酸钡粉体。

The company has a current annual output of 1,000 tons of high-tech products has been made in the certificate of "electronic features of high-purity barium titanate," and "electronic features of high purity barium carbonate" production lines.

目前公司拥有一条年产1000吨，已取得高新技术产品证书的"电子功能高纯度钛酸钡"及"电子功能高纯度碳酸钡"生产线。

Barium titanate technology products with the Japanese Fuji products at the same level as, barium carbonate product purity crystalline appearance and are in the domestic leading position.

钛酸钡产品的技术含量与日本富士系列产品处于同一水平，碳酸钡产品在晶型外貌及纯度上都处于国内领先地位。

The New York Authority stipulates that barium carbonate should be packaged in fibre drums instead of bags.

纽约港务局规定碳酸钡应该用纤维板制成的桶装而不用袋装。

Domestic sales agent mixing silicone rubber, insoluble sulfur, wet granular products such as barium carbonate.

代理销售国产混炼硅橡胶、不溶性硫磺、湿法粒状碳酸钡等产品。

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。

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。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。