We research corn harvest system of ultrasonic flowmeter by Doppler in this paper, start the prophase research work on corn harvest system and ultrasonic flowmeter.
以多普勒法的谷物收获超声波流量计为研究对象,进行谷物收获系统和超声波流量计的前期研究。
In prophase research of antifungi activity, propamidine has been found with high inhibitory effect against Botrytis cinerea.