网络与数据通信 有线网络 释文 non-acknowledgement, NAK 否定应答
- Hubble flow
- Hubble Heritage Project
- Hubble horizon
- Hubble law
- Hubble Legacy Archive
- Hubble length
- Hubble Nebula
- Hubble-Oemler law
- Hubble parameter
- Hubble radius
- Hubble rate
- Hubble relation
- Hubble-Reynolds law
- Hubble-Sandage variable
- Hubble-Sandage variable star
- Hubble's classification system
- Hubble sequence
- Hubble's law
- Hubble's Nebula
- Hubble Space Telescope
- Hubble space telescope
- Hubble sphere
- Hubble stage
- Hubble's Variable Nebula
- Hubble test