(浮动基准面)
both spiritual and formal resemblance iconicity
1°×1°厘米级全球大地水准面
1°×1° global geoid with centimeter-level
标准面放射源
Standard plane radioactive source
标准面移位术
Standard facial translocation approach surgery
波动方程基准面校正
wave equation datum correction
Wave-equation-datuming WED