全球低轨道信息中继 | |
space | global low orbit information relay |
GPS 卫星 | |
space | GPS satellites |
N 卫星 | |
space | N-SAT |
卫星 | |
environ. | satellite |
rem.sens. | satellite |
space | megabirds; satellites, balloons and rockets; moon; major planetary satellite |
卫星 DNA | |
life.sc. | satellite DNA |
| |||
global low orbit information relay |
全球低轨道信息中继 : 1 phrase in 1 subject |
Aviation | 1 |