短語詞組短語mining rights operation 鑛權經營mining g operation 採鑛工作mechanized coal mining operation 採煤機械化nodule mining operation 結核開採作業(yè)hydraulic mining operation 水採作業(yè)hydraulic hitch mining operation 水採作業(yè)Set mining operation processes 集採化操作流程discharging cartridge in mining operation 鑛山排漏彈computer simula -tion in mining operation 鑛山生産過程計算機模擬 返回 mining operation