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Developing the mass rate balance Dashed line defines the control volume boundary mi nev(①) nev(t+△) Region i LRegion e m →m; Time t Time t+△t me→ Study: the fixed quantity of matter m as time elapses: mev(t)+mi=mev(t At)+me mev(t At)-moy(t)=mi-me me(t+△t)-nev(t) mi me △t △t△t 上游充通大 March 28,2018 3 SHANGHAI JIAO TONG UNIVERSITYMarch 28, 2018 3 Developing the mass rate balance Study: the fixed quantity of matter m as time elapses: mi me m
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