addition law相加律additionn.增加；加法；附加物additional gravity附加重力Addition of Copper添加铜元素additional command[计] 附加命令, 添加命令additional circuit附加电路additional filings补充备案additional process附加过程addition materials[机] 加给料additional mark on额外加成Addition-Curable加成固化additional traffic附加业务量