超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
从飞行器上发射的人造卫星
aircraft multiband transmitter
导航卫星联合委员会人造卫星联合导航委员会
joint navigation satellite committee
低地球轨道人造卫星
LEOS Low Earth Orbit Satellite
电缆和人造卫星的联接
marriage of cable and satellites
二十四小时人造卫星
twenty-four-hour satellite
高空发射的人造卫星
high altitude launching satellite
人造卫星
artificial satellite
artificial earth satellite
satellite artificial
man made satellite
man-made satellite
Sputnik
Satellite
artifical satellites
man-made
人造卫星场检定器
artificial starfield calibrator
人造卫星定位方法
satellite positional fixing system
人造卫星定位系统
GPS
Global positioning system
人造卫星观测
observation of artificial satellite
satellite observation