Pcmm
abbr. pulse code modulation multiplexer 脉码调制多路复接器，脉码调制复用器
🗣️ 情景例句
Isn't this the Nanjing University?
请问是南京大学吗？
Can I fix an overseas call to London by person-to-person call?
我要打到伦敦的叫人电话好吗？
Yesterday I paid him a visit.
昨天我去看望了他。