石英晶体振荡器是一种非常重要的频率源。
Quartz crystal oscillator is one of the most stability frequency references.
但是，许多设备工作在温度范围变化较大的环境中，由于石英晶体谐振器自身特殊的物理特性，温度的变化会导致晶体振荡器的频率发生偏移。
However, many devices work in the environment which the temperature changes in a larger range, the change of temperature will cause the crystal oscillator's frequency shift.
大多数是晶体振荡器，它利用(石英)晶体固有共振的优点，所以频率稳定。
Most are crystal oscillators that take advantage of the inherent resonance of a (quartz) crystal to obtain frequency stability.
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