Flowmeter measuring system
作者： Carl W Zimmerman , Larry C Clement , Jack R Hulme
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lens.org 参考文章(5)
Kenneth W Foster, Meter compensating system ,(1961)
Milton H November, Robert E Lindemann, Digital measuring instrument and densimeter ,(1960)
Puerto Rico, Ortiz Muniz Roberto, Culver Lanrence R, High speed weighing system using an automatically balanced electrical circuit to provide a digital indication ,(1960)
Fellows Horace, Improvements relating to flowmeters ,(1960)