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Development of ultrasonic flow meter
Ultrasonic flowmeter has a long history of development,and ultrasonic water flow meter are applied to measure liquid or air for decades. In 1928, The first ultrasonic flow meter produced all around the world In 1955, Ultrasonic flowmeter was applied to measure aviation oil and liquid measurement ...Read more -
Drainage pipe network management is diffi...
The drainage pipe network is the underground lifeline of the city, which has the characteristics of large flow changes, complex flow patterns, poor water quality, and poor equipment installation environment. Therefore, the urban drainage pipe network system is the basic security facility of the c...Read more