继电器往往会以开关时间规定一个重复率，或者说是工作频率，使用时需低于该值。
A repetition rate, or operating frequency, lower than that allowed by the switching times is often specified for a relay.
频率转换继电器故障，不能转换频率。
The frequency changing relay is out of order. It can not change frequencies.
当电流超过限制值时，过负荷电流继电器自动保护振荡管和整流器，同时可以避免由不当操作所引起的频率漂移。
The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented.
其接触系统的固有频率与响应振幅特性直接影响电磁继电器的接触可靠性。
Natural frequency and response vibration amplitude character of contact system will directly influence the reliability of EMR's mechanical contact.
由于这一效应的影响，干簧式继电器所能承载的信号频率通常被限制在10MHz或更低。
Signal frequencies carried by reed relays are usually limited to 10mhz or less due to this effect.
对高频继电器RF性能影响较大的不连续结构进行优化，使高频继电器的RF性能在工作频率下得到较大的提升。
The discontinuity regions which influence the rf performance of high frequency are optimized and finally the rf performance of the relay is improved greatly within the working frequency.
该系统除了能够测量时间继电器时间段外，还可以测试信号的频率等。
In addition the system not only can test time of the time relay, but also can test the signal frequency.
该系统除了能够测量时间继电器时间段外，还可以测试信号的频率等。
In addition the system not only can test time of the time relay, but also can test the signal frequency.
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