?椭性圆束
... elliptic partial differential operators ==> 椭圆型偏微分算子 elliptic pencil of circle ==> 椭性圆束 elliptic pin ==> 椭圆形销 ...
?椭性圆素
... 椭圆型;偏微分方程 elliptic partial differential equation 椭性圆素 elliptic pencil of circle 椭圆平面 elliptic plane ...
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