Hydraulic haulage and mined-out area fill with tunnel driving waste at the end of ore removal from stopes in Baoziwan Gold Mine是什么意思_Hydraulic haulage and mined-out area fill with tunnel driving waste at the end of ore removal from stopes in Baoziwan Gold Mine在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句