| 单词 | pneumatic trough |
| 释义 | > as lemmaspneumatic trough pneumatic trough n. a vessel filled with liquid (usually water or mercury) used for collecting gas by displacing liquid from a jar inverted in the vessel; cf. hydro-pneumatic adj. ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > general vessels > others aludela1400 sublimatoryc1405 rotumbea1475 capel1527 firepot1595 digestory1676 digester1681 capsule1727 pneumatic trough1800 receiver1808 collector1860 cartridge1920 1800 tr. F. A. C. Gren Princ. Mod. Chem. I. i. 88 The pneumatic-trough..is a kind of reservoir for the liquid, through which the gas is conveyed, and caused to rise. 1823 W. Henry Elements Exper. Chem. (ed. 9) I. i. 21 Place the jar filled with water and inverted, over one of the funnels of the shelf of the pneumatic trough. 1960 F. G. Mann & B. C. Saunders Pract. Org. Chem. (ed. 4) ii. 82 A second delivery-tube leads from B into a beehive stand..in a pneumatic trough. < as lemmas |
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