石膏

Is a collection of gypsum powder, plaster board wall system and the production and sale of an integrated enterprise.

是一家集石膏粉、纸面石膏板及墙体系统的生产、销售于一体的综合性企业。

The discussion is focused on how to make comprehensive use of the FGD gypsum in cases of European countries and China.

重点讨论了欧洲和国内对脱硫石膏的综合利用途径，从技术上、经济应用前景等方面进行了详细分析，找出国内对脱硫石膏应用的不足和存在的问题，提出了解决方案和建议。

The experimental results show that when the kinds of inorganic additives in the α-hemihydrate gypsum paste are different, both the shape and size of dihydrate gypsumcrystals that are formed during the hydration are different.

试验结果表明，无机外加剂的种类不同，α半水石膏水化时生成的二水石膏晶体的尺寸和形貌均不同。

Using hemihydrate gypsum as main raw materials and frothing by gum rosin composite vesicant to produce gypsum heat preserving material.

以建筑石膏为原料，采用松香类复合发泡剂发泡制成石膏保温材料。

It is found that the concentration of sulfuric acid in liquid and the reaction temperature are the most sensitive factors for this process. Increasing the ratio of solid to liquid is disadvantageous for growth of crystals even though it does not effect obviously for the rate of dehydration of FGD gypsum. On the other hand,the more closed to the neutral range of pH value the liquid is adjusted,the better stability of the α-form calcium sulfate hemihydrate appear,the more favorable for modification of crystal habit the process is made.

研究中发现pH值和盐溶液浓度是影响FGD石膏脱水速度最敏感的因素，固液比虽然对脱水速度影响不大，但固液比增大对晶体生长和习性改良不利。pH值愈接近中性范围，愈能增强α半水石膏结晶在液相中的稳定性，有利于结晶习性改良。

Gypsum heat preserving material ; hemihydrate gypsum ; producing technology ; gum rosin composite vesicant

石膏保温材料；建筑石膏；成型工艺；松香类复合泡沫剂

Our lovely old farmhouse has lath and plaster lined walls, thin strips of wood covered in plaster.

我们老的农场屋子就有板条和石膏内衬墙，细条的木材包括在石膏内。

This product is the raw material of natural gypsum developed plasterboard, appearance has milk-white.

本品的原材料是由天然石膏研制而成的纸面石膏板，外观呈乳白色。

It also covers the way to make plaster of Paris having good properties without washing.

通过水洗净化法、石灰水中和法、生石灰中和法等多种方法对磷石膏加以处理，试图探讨不经水洗制造性能良好的建筑石膏的途径。

Flue-gas desulphurization Desulfurized gypsum Plaster of Paris Comprehensive utilization

烟气脱硫；脱硫石膏；天然二水石膏；综合利用

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。