短語(yǔ)詞組短語(yǔ)elliptic partial differential operator [數(shù)]橢圓型偏微分算子strongly elliptic differential operator 強(qiáng)橢圓微分算子elliptic pseudo -differential operator [數(shù)]橢圓型偽微分算子self -adjoint elliptic differential operator [數(shù)]自伴橢圓型微分算子transversally elliptic left -invariant differential operator 橫截橢圓型左不變算子 返回 elliptic differential operator