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
- new security concept
- News Edition and Translation Agency
- News Editorial Work
- new sensibility
- news ethic
- news ethics
- Newseum
- News Express
- news facts
- news film
- news function
- news gathering
- News-gathering techniques
- News Half an Hour
- New Shepard sub-orbital manned space vehicle
- New Siberian Islands
- news information
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- news infringement
- News Inspection Standard
- news inspection system in Enemy-occupied Area
- news inspection system in the Period of Beiyang Warlords
- news inspection system of Nanjing Provisional Government
- news inspection system of the Nanjing Government
- news institutions