微分算子法 differential operator: 微分算子, 微分算符; 微分运算子operator method: 符号法differential method: 差动法; 差分作用法; 差异法; 示差法; 微分法; 异化有丝分裂dyadic differential operator: 并元微元算子elliptic differential operator: 椭圆型微分算子下载手机词典可随时随地查词查翻译