采掘

jiā kuài cǎi jué sù dù

加快采掘速度

speed up excavation

cǎi jué zhuāng bèi

采掘装备

equipment for excavation

cǎi jué gōng chéng

采掘工程

mining project

cǎi jué kuàng wù

采掘矿物

excavate minerals

cǎi jué jīn kuàng

采掘金矿

mine gold

cǎi jué shēn dù

采掘深度

depth of excavation

shā shí cǎi jué chǎng

砂石采掘场

a sand pit