卫星重力测量
satellite gravity measurement
satellite gravimetry
satellite almetric gravity
重力测量卫星
Gravity field explorer satellite
gravisat
航空矢量重力测量
airborne vector gravity survey
airborne vector gravimetry
GPS卫星测量系统
GPS satellite measurement system
电离层直接测量卫星
ionosphere direct measurement satellite
热带降雨测量卫星
tropical rainfall measurement mission
breath-counting