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F 开头的英语单词（共 143,619 个）
frequency spectrum designation
频谱表示,频段名称
frequency splitting
[电] 裂频
frequency spread
频率展开
frequency square
频率正方
frequency stability
[电] 频率稳定度
frequency stability analyzer
频率稳定度分析器
frequency stability of sound carrier
[电视] 伴音载频的稳定度
frequency stability of vision carrier
[通信] 图像载频的稳定度
frequency stabilization
[电] 频率稳定化
frequency stabilized lasers
[网络] 稳频激光；稳频雷射
frequency stabilized power source
[电] 稳频电源
frequency staggering
频带参差
frequency standard
[计] 频率标准
frequency step
频率阶跃
frequency step down
频率降低
frequency stepping
步进频率(调变)
frequency storage
频率存储器
frequency studies
[经] 频率研究