分析了天然石膏的结构，阐述了三种石膏改性的方法及改性的机理。
Analyzed the structures of nature gypsums and presented three modified methods of gypsum and their mechanisms.
经测试，该产品完全可替代天然石膏空心条板，技术性能指标达到了国家规定的相关标准。
The kind of hollow batten whose performance indicators meet the national standards can replace the product made of natural gypsum.
杂质对水泥性能影响不大，不经预处理作水泥缓凝剂，其性能与采用天然石膏的水泥相当。
The properties of cement with titanium gypsum are similar to those of Portland cement with natural gypsum.
并通过工程实例说明该系统煅烧天然石膏、磷石膏、脱硫石膏、氟石膏的各项工艺参数、原料成分、煅烧能耗及最终成品的检测数据。
Various technological parameters, compositions of raw materials, energy consumption of calcinations and testing data of final product were also illustrated by engineering examples.
在这两座建筑中，其他的可视材料包括天然的白色油漆刷饰的木材、花岗岩和白色的石膏板。
Other visible materials in the two buildings include natural and white-painted wood, granite and white-painted plasterboard.
选取硫酸钾作为激发剂对天然硬石膏进行活性激发，并分别掺入硅酸盐水泥与半水石膏进行改性。
Choosing potassium sulfate as an activator to stimulate the activity of natural anhydrite, and modified its properties by adding Portland cement and hemihydrate gypsum respectively.
固化磷石膏磨制的水泥和天然二水石膏磨制水泥相比，二者的凝结时间最接近，强度有一定的提高。
Cement prepared with solidified phosphogypsum as retarder had similar setting time as cement prepared with natural gypsum and higher strength than them.
正面，作为一个外部的复合保温系统，具有“天然石材石膏”的表面。
The facade, which serves as an outside composite thermal insulation system, was provided with a "natural stone plaster" surface.
石膏砌块因其主要原料石膏具有独特的分子结构而具有天然的耐火特性。
Gypsum blocks have natural fire resistance property because of the special molecule structure of gypsum.
热电厂脱硫石膏与天然二水石膏相似，适合作水泥缓凝剂。
The FGD gypsum similar to the natural gypsum in common characteristics, and is adequately used as cement retarder.
氡主要来自建筑材料，如花岗岩、砖砂、水泥及石膏之类，特别是含有放射性元素的天然石材，易释放出氡。
Radon from building materials such as granite, brick sand, cement and gypsum and the like, in particular, contain elements of natural stone and easy to release radon.
KTCC为住宅区和商业区客户供应天然石材、墙壁瓷砖和屋顶瓷砖、大理石和石材地板、壁炉和石膏板等产品。
KTCC serves residential and commercial clients through the supply and installation of natural stones, wall and roof tiles, marble and stone floors, fireplaces and gypsum boards.
通过大量的化验室小磨配比试验，研究了脱硫石膏代替天然二水石膏作水泥缓凝剂对普通水泥、矿渣水泥各项性能的影响。
After many grinding mixture ratio tests in laboratories, the paper studies the effect on ordinary cement and slag cement of desulfurized gypsum as cement retarder, instead of raw gypsum.
自然资源：天然气、原油、硅石、石灰石、粘土、白垩、石膏、铁、盐、铅、锡。
Natural Resources: natural gas, crude oil, silica, limestone, clay, chalk, gypsum, iron, salt, lead, tin.
自然资源：天然气、原油、硅石、石灰石、粘土、白垩、石膏、铁、盐、铅、锡。
Natural Resources: natural gas, crude oil, silica, limestone, clay, chalk, gypsum, iron, salt, lead, tin.
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