derivationn.派生;推导;来历衍生物;导数.
derivation basis导子基
derivation chain衍生链
derivation graph导引图
derivation method求导法则
derivation action派生诉讼
derivation images衍生意象
derivation tunnel引水道隧洞
derivation income派生所得
derivational text衍生文本
derivation of finn企业衍生