Dispatching telephone control board
American Automatic Control Conference
conference telephone device
conference telephone subset
conference telephone switch system
GCC General Conference Control
JACC Joint Automatic Control Conference
Joint Automatic Control Conference
Operator Presides Telephone Conference
Television and Telephone Conference
UCC Universal Conference Control
video conference telephone
Stored program control telephone switching systems
Stored program-control telephone switching system
Atomic Energy Control Board
分子束磊晶
分子束磊晶法
分子子束外延
原子能管理委员会﹝英国、加拿大﹞