- primary frequency standard
- 基本 basic; fundamental
- 频率 frequency; rate
- 标准 standard; criterion; benchma ...
- 基本频率 base frequency; basic frequency; elementary-frequency; fundamental frequency; master frequency
- 晶体基本频率 crystal fundamental
- 副频率标准 secondary frequency standard
- 频率标准 fs frequency standard
- 原频率标准 primary frequency standard
- 铷频率标准 rubidium freqnency standard
- 基本频率(或自然频率) fundamental or natural frequency
- 基本频率指示器 fundamental frequency indicator
- 精确频率标准 precision frequency standard
- 量子频率标准 quantum frequency standard
- 美国频率标准 united states frequency standards
- 一级频率标准 primary frequency standard
- 原子频率标准 atomic frequency standard
- 中央频率标准 central frequency standard
- 氨分子频率标准 ammonia molecular frequency standard
- 国内主振频率标准 national master frequency standard
- 晶体管化频率标准 transistorized frequency standard
- 气体池频率标准 gas-cell frequency standard
- 时间和频率标准 time and frequency standard
- 实验室的频率标准 laboratory standard of frequency
- 实验室频率标准 laboratory frequency standard; laboratory standard of frequency
- 无源原子频率标准 passive atomic frequency standard
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Last modified time:Mon, 11 Aug 2025 00:29:56 GMT