Production practice of substitue desulfogypsum for natural gypsum as retardant;
脱硫石膏代替天然石膏作缓凝剂的生产实践
The results show that though the waste gypsum used independent can affect the setting time and the strength of cement, the waste gypsum mixed with natural gypsum is used as cement eretarder, and the content of SO3 is controlled correctly, the qualified cement can be produced in inherent technology conditions, and the high performance concrete can be made with this cement.
研究结果表明,废石膏作为水泥缓凝剂单独使用时虽然可能会影响水泥的凝结时间和强度,但如果与天然石膏搭配使用,并控制适当的SO3掺量,就可以在原有生产工艺参数基本不变的条件下,生产出合格的水泥,而且可以配制出符合建筑工程要求的高性能混凝土。
Oil recovery enhancing mechanism by natural zeolite and the effect analysis;
天然沸石提高采收率作用机理及效果
Adsorption of cadmium (Ⅱ) in solution by natural zeolite-chitosan adsorbent;
天然沸石负载壳聚糖吸附溶液中镉(Ⅱ)的研究
Removal of arsenic from water by modified natural zeolite and chitosan;
天然沸石负载壳聚糖去除水中砷的研究
The objects of the treatment method include mainly the natural diamonds,HTHP synthetic diamonds and chemical vapor deposition(CVD) synthetic diamonds.
该处理方法的对象主要有天然钻石、高温高压合成钻石以及化学气相沉淀法合成钻石。
Experiment on Using Fluorine Gypsum as Retarder Instead of Natural Gypsum;
利用氟石膏代替天然石膏作水泥缓凝剂的试验
On Christmas day, the man still had his right leg in plaster.
圣诞节那天，这人的右腿仍然绑着石膏。
Study on Improving Activity of Natural Anhydrite and Making Cementation;
天然硬石膏活性激发及胶结材的制备
Study on Hydration and Hardening of Natural Anhydrite and Its Activation
天然硬石膏水化硬化及活性激发研究
It also discussed the fineness and activating agent in modification of natural anhydrite.
本中还对细度与激发剂对天然硬石膏的改性机理进行了探讨。
Surface Coating of Superfine Powders of Natural Anhydrite and Orthogonal Analysis on Its Effective Factors
天然硬石膏超微粉体表面多层包覆改性影响因素正交分析
Cement prepared with solidified phosphogypsum as retarder had similar setting time as cement prepared with natural gypsum and higher strength than them.
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。
Amanita species from Heishiding Nature Reserve in Guangdong
广东黑石顶自然保护区的鹅膏属真菌
This paper has studied the influence of fineness and activating agent on hydration and character of hard body for natural anhydrite.
本文研究了细度与激发剂对天然硬石膏的水化及其硬化体性能的影响。
Gypsum and anhydrite
GB/T5483-1996石膏和硬石膏
APPLICATION OF THE FIR ESSENCE OIL IN THE OINTMENT COSMETICS
天然冷杉精油在膏霜类化妆品中的应用研究
Natural Resources: crude oil, natural gas, limestone, fish.
自然资源：原油、天然气、石灰石、鱼。
limestone-gypsum handling system
石灰石／石膏处理系统
a salt found in nature as chalk or calcite or limestone.
白垩、方解石或石灰石等天然的盐。
estimation of oil and gas reserves
石油和天然气储量计算
natural road, partly metalled
天然道路，一部分铺碎石
insert natural diamond bit
天然金刚石镶齿钻头
International Committee on Natural Zeolites(ICNZ)
国际天然沸石委员会