- GB/T 50934-2013 石油化工工程防渗技术规范（英文版）
- 中华人民共和国住房和城乡建设部
- 14字
- 2021-04-20 11:29:09
2.0.3 Phreatic
Subsurface groundwater above the first stable aquiclude having a free water surface.
Subsurface groundwater above the first stable aquiclude having a free water surface.