fixed gate meaning in English

固定门
固定闸门

The method can be used in the measurement of periodic and nonperiodic signal . according to the high accuracy and fixed gate - time measurement method , based on the multiple period synchronization method , the high speed , high accuracy and continuous frequency measurement is accomplished
将其再与一种从多周期同步法发展而来的高精度、定闸门法相结合，从而实现了高速、高精度、连续频率测量，这非常适合非频率量的频率传感信号的测量。