252 ECS definitions

Environmental Control System 
Engagement Control Station 
Electronic Certification System 
European Communications Satellite 
Electronic Crash Sensor 
Emission Control System 
Expeditionary Combat Support 
Elitegroup Computer Systems 
Emergency Communications Staff 
Education Commission of the States 
Electronic Chart Systems 
Enterprise Communications Server 
European Communications Satellites 
Electronic Commerce Services 
Embedded Computer System 
Embedded Computer Systems 
Energy Conversion Subsystem 
Engine Control System 
Environment Control System 
Environmental Conditioning System 
Environmental Control Subsystem 
Environmental Control Systems 
EOSDIS Core System 
Equipment Concentration Site 
Executive Correspondence Staff 
Experimental Communications Satellite 
EXTENDED CORE STORAGE 
External Complaint Staff 
East China Sea 
Ecuadorian Sucre 
Education Career Stabilization 
Electronic Chart System 
Electronic Commerce Service 
Electronic Contract Solicitation 
Electronic Control Switch 
Electronic Courier Services 
Electronic Crossconnect System 
Elitegroup Computer Systeme 
Emergency Coolant System 
Emissions Control System