“主钟”（primary clock）是天文学专有名词。来自中国天文学名词审定委员会审定发布的天文学专有名词中文译名，词条译名和中英文解释数据版权由天文学名词委所有。
n. master clock
misc. primary clock
... 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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So结果的水平差异主要是协调世界时主钟水平差异的反映；
The level difference of these results at SO is a main reflection of the level difference of UTC master clock.
哺乳动物中的昼夜节律系统由位于下丘脑scn核内的生物钟主钟和位于多数外周细胞中的子钟组成。
The circadian system in mammals is composed of a master pacemaker in the suprachiasmatic nucleus (SCN) of the hypothalamus and slave clocks in most peripheral cell types.
该设备基于AT 89c51，采用软件抗干扰技术，实现授时主系统时钟与中心UT C主钟的同步。
Adopting software anti-jamming technology, this instrument is based on AT89C51 to achieve the synchronization of the clock of time service system with UTC.
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