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便携式安全火花矿井无线通讯装置Montan采矿研究公司为井下流动人员或各种行驶车辆研制出一种通过无线电话随时传送信息和指令的无线通讯装置。流动人员携带收发讯机,通过感应作用到
Portable Safety Spark Mine Wireless Communication Montan Mining Research has developed a wireless communication device for sending information and instructions to and from underground mobile workers or vehicles on the go. Mobile staff to carry the transceiver, through the role of induction