石砂 meaning in English

stone sand

Methods of chemical anallysis of quartz andsiliceous sand for import and export
进出口石英石砂化学分析方法
Super finishing stones , stick
超精油石砂条
Carbo ironwork whetstone and stick are mainly used for each kind of metal grinding tool , cutting tool , treating tool , clamping tool and etc with a process of finishing , fine grinding , precision grinding or bur grinding
铁工木工油石磨刀石铁工油石砂条主要用于各种金属磨具切削工具治具夹具.