... 原级铯射束频率标准 primary cesium beam frequency standard 主钟；原级钟 primary clock 初级线圈 primary coil ...
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... 最年夜时候隔断偏差（MTIE）表征频偏和相位偏离环境，它是在查看连续时候段内产生的最年夜的峰-峰时候隔断偏差（TIE）。 基准钟 primary clock 基准频标 primary frequency standard ...
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primary resource clock 基准主时钟
PRC Primary Resource Clock 基准主时钟
primary reference clock 主参考时钟 ; 主基准时钟
primary atomic clock 原级原子钟
PRC Primary Reference Clock 一级基准时钟
Ever since I started using my new MacBook Air as my primary non-work laptop, I've been frustrated that you can't just click on the clock to show the calendar, the way Windows 7 does.
自从我开始使用新MacBook Air作为我的非工作笔记本，对于不能像在Windows 7系统里面那样在时钟上点击后弹出日历这一点，我觉得有点失望。
The paper introduces the system design and operation principle of the primary reference clock equipment.
介绍了基准时钟的系统设计及工作原理。
Biological clock was the primary physiological function for insect.
生物测时是昆虫的基本生理功能。
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