In security management in mine, underground environment monitor and person localization are the most important.
井下的环境监测和人员定位是矿井安全管理中最为重要的环节。
Objective To observe the effect of underground part-obturated environment on human health.
目的观察半密闭地下环境对健康的影响。
The underground parking lot, good environment, but also for free.
环境不错，地下车位很多，也是免费的。
The underground parking lot, good environment, but also for free.
环境不错，地下车位很多，也是免费的。
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