常見(jiàn)例句雙語(yǔ)例句In this paper, a gas ultrasonic flowmeter with transit-time difference measurement has been designed.本文研制時(shí)差法氣體超聲波流量計(jì)，包括流量計(jì)硬件電子線路和軟件設(shè)計(jì)。 返回 transit-time difference