1) marine frequeney band
船用频率波段
2) C-band frequency
C波段频率
1.
This paper presents a design scheme of C-band frequency signal source through their separate characteristics of DDS and PLL,gives the main hardware devices and specific implementation.
结合数字直接合成技术(DDS)和锁相环技术(PLL)的各自性能特点,介绍了一种实现C波段频率信号源的设计方案,并给出主要的硬件选择及具体的实现。
3) frequency band
频带，波段，频率带
4) intermediate marine band
船用中短波波段
5) marine radar band
船用雷达波段
6) X-band nautical radar
X-波段船用雷达
1.
The simulation of monitoring oceanic dynamical environment parameters based on X-band nautical radar
X-波段船用雷达观测海洋动力环境要素仿真研究
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条