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单词 pneumatic differentiation
释义

> as lemmas

pneumatic differentiation
pneumatic differentiation n. Medicine Obsolete rare the treatment of lung disorders by the alternation of increased and decreased atmospheric pressure on the body combined with forcible inspiration and expiration.
ΚΠ
1887 A. H. Buck Ref. Handbk. Med. Sci. IV. 38/2 I allude to the Pneumatic Cabinet, and the method of Pneumatic Differentiation, as perfected and applied by Mr. Joseph Ketchum, a practical physicist of Brooklyn, N.Y.
1889 Lancet 4 May 889/1 (1) Residual air expansion or expiration into a rarefied atmosphere (2) forced inspiration (3) pneumatic differentiation, or the alternation of the above two exercises.
extracted from pneumaticadj.n.
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