石膏

Space analysis and Bolton's analysis are two important parts of the orthodontic diagnostic and treatment planning procedures for malocclusions. Measuring data from plaster models with boley gauge or vernier caliper is a traditional method. Due to recent technologic advance, the models are allowed to be digitized and measured with software tools. The purpose of this study was to compare the differences between measurements done by software tools on digital models and those done directly on plaster models.

在矫正的诊断与治疗计画拟定的过程中，齿列的空间分析及波顿牙齿比值分析都占了重要的一环；传统的方法是在石膏模型上用波利尺或游标卡尺来做测量与分析，现在由於电脑的进步与普及，石膏模型已可数位化，因此本研究主要是探讨手动测量石膏模型与使用电脑程式辅助测量数位化模型在分析上的差异。

The FGD gypsum can become plaster by calcination and be utilized as the raw materials of construction.

脱硫石膏为二水石膏，经过焙烧后成半水石膏并加以利用可作为优质的建材产品之一。

Compact Wet FGD gypsum produced by the quality and content of trace elements in gypsum, plaster fully meet the market requirements of product quality to achieve desulfurization by-product of re-use of resources

紧凑式湿法脱硫工艺产生的脱硫石膏产品的质量和石膏中微量元素的含量，完全可以满足市场对石膏产品的质量要求，实现了脱硫副产品的资源化再利用

The natural result of gypsum plaster and water containing dihydrate anhydrite, and contained chemical components, in particular the complex trace elements, it will cement additives do not have a different series of deep radical solution or condensate, and other phenomena.

而天然石膏因含有二水石膏和无水硬石膏，加上所含化学成分，特别是微量元素复杂，反而会对水泥外加剂不同系列产生不相深溶或急凝等现象。

The results show that adding water reducer on gypsum before grinding gypsum can cause good grindingaid effect and improve remarkably the dispersing and fluidity of gypsum plaster.

减水剂磨前掺入可显著提高石膏的粉磨效率，提高石膏的比表面积，使颗粒粒度细化；可明显增加减水剂在石膏表面的吸附量与ζ电位，其分散能力大大优于减水剂同掺。

My company's main products: ceiling, wall keel, T-paint keel, black and white line aluminum keel, TK Plate, FC board, and other imports, China-made high-Zhong Didang Kuangmian board, Lafarge gypsum board, gypsum Taishan Plate, embossed gypsum board, a variety Lvkou Ban seven major types of products such as over 40 varieties, if there is a special kind Length specifications to be processed, to welcome you all old and new customers来人calls Qiadan business and guide our work.

我公司主要产品为：吊顶、隔墙龙骨、 T 型烤漆龙骨、铝合金黑白线龙骨、 TK 板、 FC 板等各种进口、国产高中低档矿棉板、拉法基石膏板、泰山石膏板、压花石膏板、各种规格铝扣板等产品七大类四十多个品种，如有特殊规格可来样定尺加工，欢迎各位新老客户来人来电洽淡业务，指导工作。

It is shown that the main minerals in the slag are quartz, gypsum, mullite and hematite; an obvious characteristic apex of gypsum appears in the DSC curve when dehydrating but the apex is low total amount of SiO2, SO3, Al2O3, CaO and Fe2O3 is above 80%; there are several kinds of sulphates, not only calcium sulphate but also other sulphates with high solubility.

结果表明，电解锰渣中的主要结晶矿物为石英、二水石膏、莫来石及赤铁矿，电解锰渣有比较明显的石膏受热脱水峰，但峰值小；电解锰渣中SiO2、SO3、Al2O3、CaO和Fe2O3的总量占80%以上；电解锰渣中硫酸盐有二水石膏，也有含量较高的大溶解度硫酸盐。

The technology and the formula for manufacturing paper-faced plaster board from phosphogypsum were studied.

文章摘要：研究了以磷石膏代替天然石膏生产纸面石膏板的工艺和配方。

By testing hydration rate and hydration temperature at different times,the effect of the retarders on the hydration process of calcined gypsum was studied,and by analyzing morphology and pore structure,the effect of the retarders on the microstructure of gypsum was also studied.

测定柠檬酸、聚合磷酸钠、骨胶3类缓凝剂对石膏性能的影响，通过不同水化时间的水化率和水化温度测定，研究了缓凝剂对建筑石膏水化过程的影响，采用SEM形貌分析和压汞法孔结构分析研究缓凝剂对石膏硬化体微结构的影响。

The helmet was then molded using the plaster head as a molding ground knowing full well that it would then fit back onto the mask. Once the plasterers had molded the mask and helmet, they were actually cast out in fiberglass with color in the resin so they were black, then maybe they were painted as well.

石膏面具的头部就等於模具的底部，这样制作出的头盔戴上实际完成的面具时就能完全吻合，石膏师在黏土完成的面具和头盔取模后，就能以石膏模来生产玻璃纤维的成品，玻璃纤维内含染色的树脂所以看起来会是黑的，不过他们之后可能还会再上漆。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。