那位高位手帮我把中文摘要翻译成英文

The commercial run and study of science process are middle , rate of flow measurement is essential, the flowmeter kind many, call for , reason why have got extensive use in recent years because of ultrasonic flowmeter has the accuracy being not to contact measurement , to break off a pipeline unnecessarily, and to be able to satisfy the most commercial run. Design that course , function , characteristic , basal principle and classification have carried out detailed introduction on development of ultrasonic flowmeter first originally. The measurement principle following ultrasonic flowmeter has carried out thorough analysis on time difference secondly, from having discovered the failed problem the temperature measuring result turn up is affected by the temperature in measuring theoretical formula, have found out and have analysed a problem cause, have been given to out resolve a scheme. Have established new measurement theory at the same time , have deduced and new theoretical formul