photino.cwb.gov.twphotino.cwb.gov.tw/rdcweb/lib/cd/cd07mb/MB/PDF/31/No.4/...V Dc: . density of dry...
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photino.cwb.gov.twphotino.cwb.gov.tw/rdcweb/lib/cd/cd07mb/MB/PDF/31/No.4/...V Dc: . density of dry air. pas(T): density of . air saturated with water vapour at temperature T. : virtual