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-21B type of the products: WK-21B
3.用途：超声波水表、超声波流量计等液体流量探测
use: ultrasonic liquid flow detection
4.性能参数：performance parameters:
5. 结构尺寸：Dimension:
