This paper presents the electrocircuit design of a multi-path ultrasonic gas flowmeter. 介紹了一種多聲道超聲氣體流量計的電路設計。
The air calibrator was reformed as a standard air flowmeter, and it was used to calibrate other small range air flowmeter. 空氣校準器被改造成一台標準的氣體流量計並成功地應用於其他小量程氣體流量計的校準。
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