石膏

The strong technical force companies to adopt the most advanced production techniqe produced "Xing-Rong"brand gypsum board and PVC sticking plaster board,complete specifications,aesthetically pleasing,high-strength light,a sound-absorbing earthquake,fire thermal resistance,waterproof,moisture-proof,never fade.never deformation characteristics.

本公司技术力量雄厚，采用最先进的生产工艺制作的"兴荣"牌石膏板及pvc贴面石膏板，规格齐全，造型美观，轻质高强，具有吸音抗震、防火阻热、防水、防潮、永不褪色、用不变形等特点。

The company is located in Linyi City High-teach Development Zone,The strong techinical force companies to adopt the most advaced"jinxin"brand and PVC sticking plaster board,complete specifications,aesthetically pleasing,high-strength light,a sound-absorbing earthquake,fire thermal resistance,waterproof,moisture-proof,never fade.never deformation characteristics.

公司坐落于临沂市高新技术开发区，年产能力800万平方米，本公司技术力量雄厚，采用最先进的生产工艺制作的"金鑫"牌石膏板及PVC贴面石膏板，规格齐全，造型美观，轻质高强，具有吸音抗震、防火阻热、防水、防潮、永不褪色、永不变形等特点。是现代建筑装饰的理想材料，广泛应用于写字楼、办公楼、大型超市、商场等。

METHODS: Five plaster supramaxillary abutment tooth models were scanned and reconstructed by 3D laser scanner.

采用激光扫描仪对上颌1，2，3，5，6共5颗牙的基牙预备体石膏代型进行三维扫描，并用Surfacer软件测量相关指标，用游标卡尺在石膏代型上测量基牙预备体的各个相关指标，用三种不同的方法分析系统的可靠性、可重复性以及扫描精度。

METHODS: Five plaster supramaxillary abutment tooth models were scanned and reconstructed by 3D laser scanner. The 3D shape of the models was measured by Surfacer10.5 software and the plaster models were measured manually with vernier caliper. The data were statistically analyzed.

采用激光扫描仪对上颌1，2，3，5，6共5颗牙的基牙预备体石膏代型进行三维扫描，并用Surfacer软件测量相关指标，用游标卡尺在石膏代型上测量基牙预备体的各个相关指标，用三种不同的方法分析系统的可靠性、可重复性以及扫描精度。

The raw material is limestone because of its low-price, the product-gypasum is reliable enough to take the palce of natural gypasum.

采用价廉易得的石灰石为原料，脱硫产物石膏品质优良，可代替天然石膏使用。

It is often mixed with cream of tartar, a fine powder commonly used in cooking .

它经常混合了酒石膏之类的东西，这类酒石膏是粉末状常用于烹饪的物质。

The major hydrate is CSH gel under this condition. Curing of mortar in water increases the hydration degree of the binder with or without thermal proceeding. In addition to more CSH gels, some ettringite is formed.

试样脱模后在60 ℃蒸养6 h将阻碍无水石膏向二水石膏转化，但促进粉煤灰的火山灰反应，此时主要水化产物是CSH凝胶；继续水养护进一步促进胶结材的水化，除生成较多CSH凝胶外，还有部分钙矾石生成。

Low Dilatabilit y and great waxiness,its tenacity is twice more than common gypsum,its the ideal material forodontology model

可塑性的石膏，韧性比一般超硬石膏大二倍，是医学齿科模型的理想材料。

Taking natural anhydrate(anhydrous gypsumⅡ) as major raw material,adding composite activator for modification to adjust setting time,flexural strength and compression strength,then mixed and milled with proper amount of composite water-retention agent,fly ash and air entraining agent to obtain plastering gypsum .

以天然硬石膏为主要原料，掺加复合激发剂进行改性处理，调节凝结时间及抗折、抗压强度，然后辅以适量复合保水剂、粉煤灰掺合料、引气剂等，磨细混匀后即得到抹灰用的粉刷石膏。

The writer then provides information of the FGD gypsum disposal and reuse at home and abroad, together with the current research of comprehensive use of the cementitious materials.

本文首先分析le脱硫石膏的基本特性和危害，推荐了国内外脱硫石膏的排放和应用情况以及胶凝材料综合利用研究现状。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。