BTU Basic Transmission Unit 基本传输单元

BU Backup 文件备份

BUL Back up lighting 备用照明

BV Breakdown Voltage 击穿电压

BW Beamwidth 波束宽度，射束宽度

BWA Broadband Wireless Access 宽带无线接入

BZ Branch on Zero 零转移

C.O.P CPU overheating protection 处理器过热保护

C/D Coder / Decoder 编码器/译码器

C/I Carrier to Interference ratio 载波干扰比

C/N Carrier-To-Noise Ratio 载噪比

C/R Command / Response (bit) 命令/响应(比特)

C/S Client/Server 客户机/服务器模式

C&C Computer & Communication 计算机与通信

C2B Customer to Business 消费者到企业(电子商务)

C2C consumer-to-consumer electronic commerce 客户对客户电子商业

C3(3C) Computer, Communication, Control 计算机、通信、控制

C3I Command, Control, Communication and Intelligence 指挥、控制、通信和情报

C4I Command, Control, Communication, Computer and Intelligence 指挥、控制、通信、计算机和情报

C5(5C) Computer, Communication, Content, Customer and Control 计算机、通信、容量、顾客和控制