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。
The time base was given both by a crystal clock and the broadcast standard signals.
时间标准是由石英钟和广播标准信号提供的。
Chronometers (Crystal clock) to be provided and installed in wheelhouse as specification.
驾驶台天文钟(电子钟)应按说明书内容提供与安装。
Chronometers (Crystal clock) to be provided and installed in wheelhouse as specification.
驾驶台天文钟(电子钟)应按说明书内容提供与安装。
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