| 释义 |
p-d 英'piːd'iː美'piːd'iː BNC⁸⁶⁶⁶⁰⁺⁹
基本英英
abbr.=prism diopter¹⁰⁰
名词 pd:
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 |