pit run rock是什么意思

用法例句

Design and Construction on Side-slope Afforestation and Protection of Beijing Red Tuo Mountain Quarry;

北京红坨山采石场边坡绿化防护的设计与施工

Study on Pollution-free Management of Scrap Quarry;

废弃采石场无害化治理探讨

On quarry ecological reconstruction;

采石场生态重建的有关问题

Objective Research element composition of producing power in foundry work and quarry work.

调查研究某铸造作业和采石作业生产性粉尘成分的元素含量。

Caishigou gold copper polymetallic deposit is a volcanic mechanism controlled volcanosubvolcanic rock type deposit.

采石沟金铜多金属矿是受火山机构控制的火山—次火山岩型矿床,地表及浅部以金矿化为主,而深部则以含金的铜多金属矿床为主,具有寻找大型金及铜多金属的找矿潜力。