理学 电子通讯系统 释 electronic mail;e-mail 电子邮件 网络用户之间传递个体消息的一种通信服务。是一种用电子手段提供信息交换的通信方式，在互联网上被广泛应用。
网络与数据通信 网络应用 释文 electronic mail, e-mail 电子邮件
- uptempo
- upthrow
- upthrust
- uptilt
- Upton Sinclair
- up-to-standard evaluation of water function zone
- upturned roof-ridge
- UPU
- upward
- upward bias
- upward causality
- upward compatibility
- upward concave
- upward continuation
- upward convex
- upward cumulation
- upward cut and fill stoping method
- upward deviation
- upward directed set
- upward/downward atmospheric radiation
- upward firing
- upward induction
- upward invasion of liver qi
- upward lighting
- upward-looking bowl sundial