[underground] mine communication
[underground] mine communication
[煤炭科技英汉词典]
[underground] mine communication矿井通信
以矿为中心,矿内各部门、环节之间的各类井上下通信。
是什么意思,[underground] mine communication的解释,[underground] mine communication的翻译
[underground] mine communication
[煤炭科技英汉词典]
[underground] mine communication是什么意思,[underground] mine communication的解释,[underground] mine communication的翻译