The trial of metals, by ‘touch,’ fire, etc.; the determination of the quantity of metal in an ore or alloy; or of the fineness of coin or bullion.
| 单词 | θ209431 |
| 释义 | society > occupation and work > industry > working with specific materials > working with metal > [noun] > testing (15) assayc1386 The trial of metals, by ‘touch,’ fire, etc.; the determination of the quantity of metal in an ore or alloy; or of the fineness of coin or bullion. toucha1450 The action or process of testing the purity of a gold or silver object by rubbing it on a touchstone and comparing the result with marks made by gold… say1567 Frequently in to take (a, the) say. The testing of metals, in order to ascertain their standard of purity; = assay, n. 6a. essay1668 spec. The trial of metals; = assay, n. 6. Obsolete. assaying1728 spec. The trial of metals. parting assay1758 an assay performed by physically separating the constituent metals. van1778 A process of testing ore on a shovel; the amount of metal obtained by this test. docimasy1803 The art or practice of assaying metallic ores, i.e. of separating the metallic substance from foreign admixture, and determining the nature and… touching1908 The action or fact of touching (in various specific senses corresponding to senses of the verb); (now chiefly, of a ship) the action or fact of… heat tinting1910 (see quot. 1958). cupping1921 The formation of a cup or concavity; a concavity thus formed. spec. in Metallurgy, the process of forming a depression in sheet metal by forcing a… Magnaflux1935 A proprietary name for: a method of testing metal parts for defects by magnetizing them and applying a magnetic powder which adheres to areas of flux… Subcategories:— specific test (3) |
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