hi region meaning in Chinese
中性氢区
Examples
- Tunnel construction is very difficult hi region with high geotectonic stress and high subsurface water pressure . few deep - lying tunnels are constructed in civil conveyance and hydropower engineering up to now
特别是对在高地应力、高地下水位区域的隧洞建设，其施工难度更大，在国内的水利水电工程建设中并不多见。