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释义	无用DNA 医junk DNA
随便看	spacecraft system support spacecraft system test Spacecraft tank Spacecraft Technical Control Center spacecraft technology spacecraft telecommand spacecraft telecommunications system spacecraft telemetry spacecraft television spacecraft test spacecraft test bed spacecraft test conductor spacecraft test facility spacecraft-testing spacecraft thermal control spacecraft thermal cycling test spacecraft three-axis attitude control spacecraft time standard spacecraft-to-space surveillance spacecraft tps tiles spacecraft tracking spacecraft tracking and controlling spacecraft tracking system spacecraft transfer spacecraft vicinity equipment