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。