测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。-Measuring the frequency of means, including electronic counter to measure frequencies with high precision, easy to use, fast measurement and easy to realize the advantages of automa