gravel mine的意思|示意

美 / ˈɡrævəl main / 英 / ˈɡrævəl maɪn /

砂金矿


gravel mine相关例句

Tin ore, copper, zinc mine, iron ore, snake bite mine, silica, sand and gravel sales.

锡矿、铜矿、锌矿、铁矿、蛇纹矿、硅石、砂石购销。

A controlled blasting technology was applied to the construction of freezing thick gravel stratum section in the main shaft of Xulou Mine.

许楼煤矿在主井人工冻结巨厚砾岩段施工中,采用了控制爆破技术。