air present, current of air, wind - air moving (at times with sizeable force) from a region of significant strain to an area of low force; "trees bent beneath the fierce winds"; "when there is not any wind, row"; "the radioactivity was staying swept upwards with the air present https://thermal-cycling-chambers45677.blogripley.com/36475041/what-does-thermal-shock-testing-for-electronics-mean