英德
有道
百度
谷歌
图片
维基
百科
标准时钟 [biāo zhǔn shí zhōng]
regulator
- 介绍频率标准和时钟，包括原子钟、一等频率标准，石英晶体振荡器和其他标准。
Introduction to frequency standards and clocks, including atomic clocks and primary frequency standards, quartz oscillators, and other standards. - 第一个公共报时服务出现于1851年，以麻州剑桥哈佛学院天文台的时钟为标准。
The first public time service, introduced in 1851, was based on clock beats wired from the Harvard College Observatory in Cambridge, Mass. - 喔！发现一只时钟：那当下光秃秃的内华达州是16点08分（太平洋标准时区）。
Oh, here came a clock on the intake tower. Obviously, it was 16:08 in bald Nevada then—Pacific Time Zone.
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