underground communication的意思|示意
地下通信
underground communication相关短语
1、 underground communication duct 地下通信管道
2、 mine underground communication 煤矿井下通信
3、 underground communication pipe 地下通信管道
4、 underground communication cable 地埋通信电缆
5、 underground communication system 矿井通信系统
6、 Underground Communication Systems 地下通讯系统
7、 underground communication in coal mine 煤矿井下通信
8、 Underground Wireless Communication 井下无线通信
9、 underground radio communication 井下无线通信
underground communication相关例句
He was on this big underground communication west coast tour.
他对这个大的地下通信西海岸之旅。
The practice proved that the filter could realize system identifying and noise removing and achieve the effect of improving quality and increasing distance of underground communication.
实践证明该滤波器较好地实现了系统识别和噪声消除，能够达到改善井下通信质量、增加井下通信距离的效果。
There's been no communication with the miners since an underground explosion, and there are concerns about the threat of poisonous gases.
自从发生煤矿爆炸以来，救援人员没有和被困矿工联系，而是更加关注的是有毒气体的威胁。