Reactor Containment Building
Remote Circuit Breaker
Requirements Change Board
R Coronae Borealis
Re-Configuration Buffer
Requirements Control Board
Reverse Convertible Bond
Radiation Control Branch
randomized complete block
Randomly Connected Bubble
Real Aero Club De Baleares
Regional Chief Biologist
Regional Curriculum Base
Registered Certification Body
Regular Commissions Board
Remanded on Conditional Bail
Repairable Control Branch
Report Control Block
Reserve Basic Controller
residual current breaker
Resource Control Block
retrieval containment building
retrocalcaneal bursitis
Reverse Channel Bank
Reverse Charging Barred
Ringing Control Block