介绍了石膏及硬石膏的结构及性质。
The structures and properties of gypsum and anhedritite are introduced in this paper.
SEM照片显示，改性后硬石膏团聚减少；
The SEM photographs showed that the reunite of the anhydrite decreased.
硬石膏的加入使得球晶尺寸减小，数量增加。
The anhydrite caused spherulite size of PP diminishing, the quantity increasing.
常规牙体预备，取模，超硬石膏灌制工作模型。
Regular teeth and ready, take modulus, superhard gesso cut working model.
风的吹拂作用对硬石膏快速堆积厚大矿体起了一定作用。
Rapid accumulation of anhydrite by the blowing of wind to form thick and large ore body played a certain role.
研究了不同温度煅烧的硬石膏对硅酸盐水泥水化过程的影响。
In this paper, effect of anhydrite calcined at different temperatures on the hydration of Portland cement is studied.
在局部地方白云石和硬石膏也是重要的胶结物；还有少量自生石英。
Locally dolomite and anhydrite are important as cements, together with minor authigenic quartz.
结合硬石膏的特性和应用要求，指出了硬石膏深层次开发的具体方向。
In combination with the features and application requirements of anhydrite, the specific direction in deep-level development of anhydrite was pointed out.
四川浅层杂卤石钾矿分布于华蓥山背斜北倾没端下中三叠统之硬石膏岩层中。
The shallow polyhalite potash deposit in Sichuan are distributed in the north plunge top of Huayingshan anticline where is anhydrock of earlier Mesozoic Triassic period.
研究了在硅酸盐水泥中使用硬石膏完全代替二水石膏对硅酸盐水泥性能的影响。
Substitute anhydrous gypsum for dihydrate gypsum in Potland cement production to study the effect of anhydrous gypsum on performance of Potland cement.
高抗压强度的中硬地层，如硬页岩。石灰岩。砂岩。白云岩。和硬石膏。大理石。
Medium hard formation with high compressive strength. Such as hard shale, limestone, sandstone, dolomite, anhydrite and marble.
研究表明，水对岩石力学特性的影响主要与岩石的硬石膏含量和岩芯采取率有关。
The results show that the effect of water to rock mechanics characteristic has something to do with anhydrite's content and core extraction rate.
通过烃类与硬石膏反应的活化能分析可知，TSR反应是一个优先消耗重烃的过程。
Based on the analysis on activation energy between anhydrite and hydrocarbon, the heavy hydrocarbons will be firstly consumed in the TSR process.
在这种环境下，石膏或硬石膏可以堆积成许多米厚的岩层，而没有任何石盐伴生沉淀。
Under the circumstances, gypsum or anhydrite could accumulate to form beds many meters thick, without any co-precipitation of halite.
在这种环境下，石膏或硬石膏可以堆积成许多米厚的岩层，而没有任何石盐伴生沉淀。
Under the circumstances, gypsum or anhydrite could accumulate to form beds many meters thick , without any co-precipitation of halite.
在这种环境下，石膏或硬石膏可以堆积成许多米厚的岩层，而没有任何石盐伴生沉淀。
Under the circumstances, gypsum or anhydrite Co. ld accumulate to form beds many meters thick, without any Co. precipitation of halite.
饱和指数表明，地下水中石膏和硬石膏呈非饱和状态，而方解石、霰石呈过饱和状态。
The SI data showed that gypsum and anhydrite we re in an unsaturated state, but calcite, aragonite and dolomite were in a super- saturated state in the groundwater.
硫酸盐岩在中国分布很广泛，特别是石膏及硬石膏，其分布遍及各省、直辖市、自治区。
Sulphate rocks are quite widely distributed in China; gypsum and anhydrite, in particular, have been found almost in all parts of China.
造成这种现象的主要原因是储层中长石矿物的溶解为硬石膏在孔隙中的沉淀提供了物质来源。
The main cause of such phenomena is that feldspar solution provided sources for the deposition of anhydrites in dissolved pores.
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.
方法利用测量限制膨胀率的方法观察高铝粉煤灰与硬石膏混合后对水泥砂浆试件的补偿收缩效果。
This paper has researched on different kinds of light aggregates as well as positive effect of content of light aggregate to restrained expansion rate of shrinkage compensating concrete.
胶结作用表现为石英和长石的次生加大、自生粘土矿物、碳酸盐和硬石膏胶结物的依次形成并充填孔隙。
Cementation is showed by the secondary enlargement of quartz and feldspar, the successive formation and pores filling of cementing material of authigenic clay mineral, calcite and anhydrite, etc.
本文介绍了利用工业废弃物磷石膏煅烧脱水制取硬石膏，再与特制高铝熟料配合研制混凝土高效膨胀剂。
The efficient bulking agent of concrete was obtained by mixing anhydrite and specially made aluminous clinker. The anhydrite was obtained by calcined and dehydration ardealite.
结果表明：硬石膏能够增韧增强PP，经铝酸酯偶联剂改性的硬石膏的增韧增强效果比不改性更加明显；
The result indicated that the anhydrite could toughen and reinforce PP. The anhydrite modified by aluminium coupling agent was more effecive than the unmodified anhydrite.
结果不同印模材料采印及灌注的普通石膏模型，人造石和超硬石膏模型，其表面光滑度及硬度均有所差异。
Results There had difference on the surface smoothness and hardness of models made with different impression materials and different model materials.
矿石类型为石膏及硬石膏，矿石质量好，矿床开采条件简单，交通方便，能源充足，具有广阔的开发利用前景。
The types of ore are gypsum and anhydrite, with the high quality, simple mining conditions, the convenient traffic and the abundant energy.
岩石类型为成分成熟度较低的岩屑长石砂岩和长石砂岩，并合较多的粘土矿物和硬石膏、方解石、白云石胶结物。
The rocks are lithic arkose and arkose which are in low composition saturation and has high clay content, anhydrite, calcite and dolomite cements.
岩石类型为成分成熟度较低的岩屑长石砂岩和长石砂岩，并合较多的粘土矿物和硬石膏、方解石、白云石胶结物。
The rocks are lithic arkose and arkose which are in low composition saturation and has high clay content, anhydrite, calcite and dolomite cements.
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