For example, we have Quartzcrystal clocks and watches accurate to within one minute a year.
例如,我们使用的每年误差不超过1分钟的石英水晶钟表和手表。
2
Nearly all computers contain a quartz-crystal clock to regulate their operation.
几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
3
Arkansas and Brazil are composites of the two greatest masses of quartzcrystal and associated gemological forms on the planet, and are key to this call.