frequencymeter

常见例句

This paper presents the design and fabrication of a Microprocessor (AT89C51)based film resonant with the water level sensor supporting the use of the liquid level measurement frequencymeter.
本文介绍了一种以单片机(AT89C51)为核心与薄膜谐振式水位传感器配套使用的液位高度测量用频率计的设计与制作。
compass needle type frequencymeter
罗盘针型频率计
heterodyne frequencymeter
外差式频率计