basic tax主税basicadj.基本的；基础的；初级的；含硅少的n.基础；根本；[计]BASIC语言basic lead nitrate碱式硝酸铅basic depreciation基本折旧basic pier project基桩工程basic model groups基本型号组Basic unit monitor基层监测basic call process基本呼叫过程Basic Requirements基本要求basic breast shape乳房基本形态basic end-member基性端元basic modification基质改良