教育学 专业博士 释 master of tourism administration；MTA 旅游管理硕士专业学位 中国专业硕士学位类型之一。
网络与数据通信 网络应用 释文 mail transfer agent, MTA 邮件传送代理
- Ryan
- Ryanair Holdings plc
- Ryanggang
- Ryazan
- Ryazan oblast
- Rydberg
- rydberg
- Rydberg atom
- Rydberg constant
- Rydberg correction
- Rydberg formula
- Rydberg frequency
- Rydberg molecule
- Rydberg orbital
- Rydberg series
- Rydberg state
- Rydberg state molecule
- Ryder Cup
- rye
- ryegrass Pyrenophora leaf spot
- ryegrass rust
- rye stem rust
- Ryle, Sir Martin
- Ryle Telescope
- Rynd