air present-day, present-day of air, wind - air moving (from time to time with considerable pressure) from a place of superior tension to a location of low force; "trees bent beneath the fierce winds"; "when there isn't any wind, row"; "the radioactivity was being swept upwards through the air https://thermal-cycling-reliabili79900.acidblog.net/66738618/5-easy-facts-about-pcb-thermal-cycling-failure-modes-described