网络与数据通信 网络管理与安全 释文 domain name space 域名空间
- frequency domain signal
- frequency doubled laser
- frequency-doubled laser
- frequency doubling
- frequency doubling, frequency multiplication
- frequency doubling material
- frequency downconversion
- frequency drift
- frequency encoding
- frequency equation
- frequency error
- frequency estimator
- frequency factor
- frequency-following response
- frequency four-vector
- frequency fraction
- frequency function
- frequency histogram
- frequency hopping
- frequency hopping technique
- frequency hypothesis
- frequency hysteresis
- frequency indicator
- frequency instability
- frequency interval