标准频率 meaning in English

normal frequency
sf
standard frequency
standardfrequency

Standard frequencies for centralized network control installations
集中网络控制装置的标准频率
Guide for measurement of environmental sensitivities of standard frequency
标准频率环境敏感度测量指南
I e c standard frequencies
Iec标准频率
Normal frequency spectrum
标准频率谱
Guide for measurement of environmental sensitivities of standard frequency generators
测量标准频率发生器对环境灵敏度用指南

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