air existing, present of air, wind - air moving (sometimes with considerable power) from a region of significant tension to a region of lower pressure; "trees bent beneath the intense winds"; "when there isn't any wind, row"; "the radioactivity was staying swept upwards with the air present and out https://difference-between-therma36790.therainblog.com/34558331/considerations-to-know-about-external-purge-heater-modules