addition law相加律additionn.增加；加法；附加物additional rotation附加转动additional out vent放散烟道addition to the tax[经] 附加税Addition Assumption加法猜想additional nitrogen追施氮additional coverage增<附>加承保范围addition-compound[医] 加成产物additional equation附加方程additional expenses额外费用additional filament附加灯丝