... laboratory reference standard 实验室基准标准器 laboratory frequency standard 实验室频标 laboratory standard of frequency 实验室的频率标准 ...
基于6个网页-相关网页
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 .
基于1个网页-相关网页
high-frequency laboratory standard signal generator 实验室用高频标准信号发生器
frequency laboratory standard signal generator 实验室用高频标准信号发生器
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