1.
Gypsum and anhydrite
GB/T5483-1996石膏和硬石膏
2.
cement asbestos board
石棉水泥板，硬石棉板
3.
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
4.
Method for chemical analysis of gypsum and anhydrite
GB/T5484-1985石膏和硬石膏化学分析方法
5.
A stone once believed to be impenetrable in its hardness.
硬石，金刚石一种曾被认为在硬度上不可穿透的石头
6.
Hydration and Hardening Characteristics of Anhydrite Binder Modified with Slag
矿渣改性硬石膏基胶结材水化硬化研究
7.
Influence of Na_2C_2O_4 on hydration and hardening of anhydrite and its action mechanism
Na_2C_2O_4对硬石膏水化硬化的影响及作用机理
8.
Influence of calcined alum on the hydration and hardening performance of anhydrite
煅烧明矾对硬石膏水化硬化性能的影响
9.
The Study of Effects of Gypsum Surface Hardener on Dental Stone;
石膏表面硬化剂对超硬石膏模型机械性能影响的研究
10.
Technical terms of non-metallic mineral products--Gypsum and anhydrite
GB/T5463.3-1986非金属矿产品名词术语石膏、硬石膏
11.
a hard kind of stone; a form of silica more opaque than chalcedony.
一种硬石，硅石的一种形式，透明度不如玉髓。
12.
jadeite-glaucophane type facies series
硬玉-蓝闪石型相系
13.
Driving a nail into a stone slab/impossible to penetrate
青石板上钉钉,硬钻
14.
a hard compact kind of calcite.
一种坚硬紧密的方解石。
15.
diamond cone superficial hardness tester
金刚石锥表面硬度计
16.
hard plastic clad silica optical fiber
硬塑料包层石英光纤
17.
step index hard-clad silica fiber
突变型硬包层石英光纤
18.
hard rock coring tool
坚硬岩石井壁取心器