p.d.
abbr. （拉丁语）每日（Per diem）；警察局（Police Department）；邮政区（postal district）
网络释义
短语
专业释义
英英释义
p.d.
n.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 同义词：palladiumPdatomic number 46
英汉双解大词典