| 单词 | eprouvette | 
| 释义 | eprouvetten. 1.  An apparatus for testing the strength of gunpowder. Also attributive. ΘΚΠ society > armed hostility > military equipment > production and development of arms > 			[noun]		 > manufacture of firearms and ammunition > testing > testing instruments > apparatus for testing gunpowder powder-trier1667 eprouvette1782 powder prover1792 proof1800 provett1811 1782    B. Thompson in  Philos. Trans. 1781 		(Royal Soc.)	 71 298  				All the eprouvettes, or powder-triers, in common use are defective. 1839    Sat. Mag., Supp. Jan. 40/1  				Another form of éprouvette was devised by the late Dr. Hutton. 1846    W. Greener Sci. Gunnery 		(new ed.)	 37  				Where experiments are conducted..with moveable eprouvettes, a certain loss is sustained. 1875    E. H. Knight Amer. Mech. Dict. II. 807/2  				The éprouvette-mortar of the British service is 8 inches in diameter.  2.  A spoon used in assaying metals. ΚΠ 1874    E. H. Knight Pract. Dict. Mech.  				Éprouvette, a flux spoon. A spoon for sampling an assay. This entry has not yet been fully updated (first published 1891; most recently modified version published online December 2021). < | 
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