(FRA) measures the gain and phase r

(FRA) measures the gain and phase response characteristics with respect to frequency of the device or system under test, by applying a frequency swept sine-wave to it and examining its response signals.

結果 (中文) 1:

(FRA) 措施的增益和相位响应特性的设备或系统在测试中，通过应用频率下的频率扫到它并检查其响应信号的正弦波。

結果 (中文) 2:

（FRA）测量增益和相位响应特性与被测相对于所述装置或系统的频率，通过施加频率扫频正弦波到它并检查其响应信号。

結果 (中文) 3:

（FRA）措施方面的测试设备或系统频率的增益和相位响应特性，采用扫频正弦波并检查其响应信号。