理学 多媒体编码 释 pulse code modulation 脉冲编码调制 实现模拟信号数字化传输的编解码系统，是现代语音通信中数字化的重要编码方式。
网络与数据通信 有线网络 释文 pulse code modulation, PCM 脉冲编码调制
- corona
- Corona Australids
- Corona Australis
- Corona Austrina
- Corona Borealis
- Corona Borealis cluster
- corona-core
- corona discharge
- corona field
- coronagraph
- coronagraphic camera
- coronal
- coronal abundance
- coronal active region
- coronal activity
- coronal arch
- coronal bright point
- coronal bubble
- coronal cavity
- coronal cloud
- coronal condensation
- coronal continuum
- coronal dividing line
- coronal electrophotometer
- coronal enhancement