网络与数据通信 网络互联 释文 classless inter-domain routing, CIDR 无类别域间路由选择
- primary spermatocyte
- primary stage of socialism
- primary standard
- primary standard dosimeter
- primary standard for airborne sound pressure
- primary standard for OCTG threads
- primary standard for sound pressure in water
- primary standard for ultrasound power
- primary standard light source
- primary standard machine of shore hardness
- primary standard machine of vickers hardness
- primary standard material
- primary standard of absorbed dose to water
- primary standard of air kerma
- primary standard of angle metrology
- primary standard of diffuse transmitted visual
- primary standard of exposure
- primary standard of flatness
- primary standard of illuminance
- primary standard of laser small angle
- primary standard of laser wave length
- primary standard of length
- primary standard of line angle
- primary standard of luminance
- primary standard of luminous exposure