sand quarry

基本解释

While a shortage of sand resources in many states of our country, much crushed stone dust was produced in the course of crushing stones in quarry.
在我国很多地区出现天然砂资源短缺的同时，采石场加工碎石产生大量的石屑，占用场地且污染环境。
Companies are integrated enterprises, the main core for the building or real estate, the provision of gravel, sand, brick machine, quarry and transport.
公司属综合性企业，为主要核心建筑或房地产，提供砂石、河沙、机砖、石矿及运输。
Methods Scanning electron microscope and X-ray analysis were used to study the distribution of all kinds of elements in sand-cast, sculpt and clear-sand of one foundry work and quarry work.
用扫描电子显微镜和X射线能量色散仪测定某铸造作业翻砂车间、造型车间、清砂车间和某采石作业生产性粉尘粒子的结构及各元素的百分含量。

It turned out that the concrete was made using beach-sand that was not properly desalinated, rather than more expensive quarry-sand.
ECONOMIST: The land of disappointments The