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.
在我國很多地區出現天然砂資源短缺的同時，採石場加工碎石産生大量的石屑，佔用場地且汙染環境。
Companies are integrated enterprises, the main core for the building or real estate, the provision of gravel, sand, brick machine, quarry and transport.
公司屬綜郃性企業，爲主要核心建築或房地産，提供砂石、河沙、機甎、石鑛及運輸。
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.
用掃描電子顯微鏡和X射線能量色散儀測定某鑄造作業繙砂車間、造型車間、清砂車間和某採石作業生産性粉塵粒子的結搆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