| 摘要 |
Exhaust apparatus for exhausting "dirty" exhaust gases accept a core flow of such exhaust gases and combine that with an annularly-surrounding "rooftop" flow of ambient air for diluting the exhaust gases as well as expelling the diluted flow in a forcibly expelled plume in order to ensure that the "effective" expulsion distance of the expelled diluted flow is at least the physical length of the exhaust apparatus plus the gains gotten from efflux velocity and flowrate.
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