| 单词 | platinum ore |
| 释义 | > as lemmasplatinum ore platinum ore n. ΚΠ 1848 Sci. Amer. 1 July 323/2 Rhodium..is contained to the amount of three per cent in the platinum ore of Antioquia in Columbia. 1917 Science 29 June 666/1 Persons searching for platinum ores should remember, however, that the assay for platinum is difficult and apparently can not be successfully made by all commercial assayers. 2004 Canberra Times (Nexis) 24 July b8 Krasnoyarsk region..produces a quarter of Russia's aluminium, 99 per cent of its platinum ore and 65 per cent of its nickel. < as lemmas |
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