| 释义 |
PDEconomist⁸⁵⁸⁹
基本英英近义反义
abbr.螺纹中径=pitch diameterabbr.邮区=postal district
Noun:
a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used alloyed with gold in jewelry近义词 palladium化钯 |