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中空通信卫星 | |
earth.sc. | medium-altitude communications satellite |
DPA系统 | |
pest.contr. | DPA System |
F系统 | |
rem.sens. | F system |
PELV系统 | |
el.mach. | PELV system |
SELV系统 | |
el.mach. | SELV system |
TN 系统 | |
IT | TN system |
TN-C 系统 | |
IT | TN-C system |
TN-C-S 系统 | |
IT | TN-C-S system |
TN-S 系统 | |
IT | TN-S system |
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medium-altitude communications satellite | |||
medium altitude communications satellite |
中空通信卫星 : 9 phrases in 6 subjects |
Aviation | 1 |
Earth sciences | 1 |
Electronics | 3 |
General | 1 |
Space | 2 |
Technology | 1 |