Digital cymometer is one of the important measurement tools in the field of modern electronic technology, it is also widely used in many other areas of the measuring instruments.
数字频率计是近代电子技术领域的重要测量工具之一，同时也是其他许多领域广泛应用的测量仪器。
Many electronic test systems use relay switching to connect multiple devices to sources and measurement instruments.
许多电子测试系统采用继电器切换的方式将多个装置连接到源和测量仪器。
Signal generator is very important in modern electronic instruments. It is widely applied in many fields such as communication, navigation, radar, measure and control.
信号发生器是一类十分重要的仪器，在通信、测控、导航、雷达、医疗等领域有着广泛的应用。
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