详细解释:【计】 分区数据集, 分段数据集, 共享软件, 建筑物布线系统
英语解释：
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同义词：palladium, Pd, atomic number 46