| 单词 | fire assay |
| 释义 | > as lemmasfire assay fire assay n. U.S. an assay in which an article is melted down and the constituent metals separated and weighed; cf. cupellation n.Since the article is destroyed in the process, the procedure is typically used on a sample of a large number of items, the remainder being assayed non-destructively. ΚΠ 1834 Trans. Geol. Soc. Pennsylvania 1 29 Gold..is to be found by the fire assay. 1913 Science 5 Dec. 801/2 The accuracy with which gold and silver can be determined by fire assay was recognized in the early stages of metallurgical development. 1998 B. Hutchinson Fools' Gold ii. 25 So-called fire assays are considered much more accurate and require smaller samples. < as lemmas |
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