| 单词 | titanium |
| 释义 | titanium /tuy tay"nee euhm/, n. Chem. a dark-gray or silvery, lustrous, very hard, light, corrosion-resistant, metallic element, occurring combined in various minerals: used in metallurgy to remove oxygen and nitrogen from steel and to toughen it. Symbol: Ti; at. wt.: 47.90; at. no.: 22; sp. gr.: 4.5 at 20°C. [ < NL (1795); see TITAN, -IUM] |
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