| 单词 | factitious air |
| 释义 | > as lemmasfactitious air factitious air n. Science (now historical) any kind of gas or vapour produced artificially or experimentally. ΚΠ 1667 T. Sprat Hist. Royal-Soc. 223 Experiments..of the living of Creatures by Factitious Air. 1748 N. Robinson Christian Philosopher (new ed.) iv. 61 Animals, included in a Receiver of that factitious Air, will sicken, pine, and die, in the same Manner, as if the Air Pump was wholly exhausted of pure air. 1835 F. H. Ramadge Asthma 189 Considerable expectations were at first formed of the results to be obtained from the inhalation of factitious airs; but these have, for the most part, ended in disappointment. 1992 W. H. Brock Fontana Hist. Chem. iii. 124 It was found possible to prepare and study some twenty or more ‘factitious airs’ that were different from ordinary air in properties and density. 2005 Brit. Jrnl. Hist. Sci. 38 232 In the last two decades of the eighteenth century..the factitious airs later named hydrogen and oxygen were exploded into water by the electric spark. < as lemmas |
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