| 单词 | palladium |
| 释义 | palladium /peuh lay"dee euhm/, n. Chem. a rare metallic element of the platinum group, silver-white, ductile and malleable, harder and fusing more readily than platinum: used chiefly as a catalyst and in dental and other alloys. Symbol: Pd; at. wt.: 106.4; at. no.: 46; sp. gr.: 12 at 20°C. [special use of PALLADIUM; named (1803) after the asteroid PALLAS, then newly discovered; see -IUM] |
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