水面水力特征
hydrodynamic feature of surface
灌水静水平衡
hydrostatic balance with injected water
静力水准
hydro-static leveling
static leveling
hydrostatic level
hydrostatic leveling system
静力水准系统
Hydrostatic Leveling System HLS
hydrostatic leveling system
静力水准系统HLS
Hydrostatic Levelling System HLS