超声波换能器技术规格书
Ultrasonic transducers technical specification
1.产品名称:超声波换能器: Product name: ultrasonic transducers
2.产品型号:WK-21D type of the products: WK-21D
3.用途:超声波液体流量探测use: ultrasonic liquid flow detection
4.性能参数:performance parameters:
5.外观尺寸:Dimension: