Main influ-encing factors on rock abrasiveness are the sturdiness of rock mass and contentof hard minerals,and the coefficient of rock abrasiveness is a function of thespecific energy consumption in drilling and the content of hard minerals.
影响岩石磨蚀性的主要因素是岩石的整体坚固程度和硬矿物含量。
technical scale of mineral hardness
矿物硬度的工程等级
Minerals usually differ in hardness.
矿物的硬度往往不一样。
The relative resistance of a mineral to scratching, as measured by the Mohs scale.
相对硬度用莫氏硬度标测量的某种矿物质的相对硬度
This scale is based on the relative abrasiveness of minerals.
此硬度计的依据是矿物的相对研磨能力。
a lump of hard consolidated mineral matter.
一块硬的固体矿物质。
Hard water contains high concentrations of minerals and other substances that may provoke allergic reaction.
因为硬水中含有可能导致过敏反应的高浓度矿物质和其它物质。
Main influ-encing factors on rock abrasiveness are the sturdiness of rock mass and contentof hard minerals,and the coefficient of rock abrasiveness is a function of thespecific energy consumption in drilling and the content of hard minerals.
影响岩石磨蚀性的主要因素是岩石的整体坚固程度和硬矿物含量。
A mixture of black manganese oxide minerals.
硬锰矿一种黑色氧化锰矿的混合物
Experimental Study on Sulfate and Haroness Removal from Mine Waste Water with High Degree of Mineralization;
高矿化度矿井水硫酸盐、总硬度去除的实验研究
an artifact made of hard brittle material produced from nonmetallic minerals by firing at high temperatures.
在较高的温度下由非金属矿物制成的坚硬的易碎的材料制成的人造物。
These mineral properties include the color, streak, luster, hardness, crystal form, specific gravity, cleavage, fracture and so on.
这些矿物的物理性质包括颜色、条痕、光泽、硬度、晶形、比重、解理、断口等等。
very hard mineral used as an abrasive.
一种极为坚硬的矿物，用作研磨剂。
Topaz is a hard, transparent mineral.
黄水晶是一种坚硬、透明的矿物质。
A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalline structure, color, and hardness.
矿物一种自然生成的同类无机固体，具有确定的化学成分和独特的晶体结构、颜色和硬度
Analysis on the Change of Groundwater Salinity and Hardness in Hutuohe Plain
滹沱河平原地下水矿化度和硬度变化分析
A small rounded lump of a mineral or mixture of minerals, usually harder than the surrounding rock or sediment.
矿的结核一种矿物或矿物混合物的小圆块，通常比表层岩石或矿渣坚硬
Experimental Study on the Removal Effect of Sulfate Radical and Hardness in Mine Wastewater;
矿井水中硫酸根及总硬度去除效果的试验研究
Development and Application on Equipment to Reduce Mine Water Hardness with Lime Method
石灰法降低矿井水硬度设备的研制与应用