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卯酉圈
过椭球面上一点的法线,可作无限个法截面,其中一个与该点子午面相垂直的法截面同椭球面相截形成的闭合的圈。
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卯酉圈
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eggplant lady beetle
eggplant phomopsis rot
eggplant root-knot nematode disease
eggplant Verticillium wilt
egg plasm membrane
egg product inspection
egg production curve
egg production traits
egg products
egg quality
eggs Benedict
egg-shaped
egg-shaped body
eggshell black pottery high handle cup
eggshell pottery
egg shell structure
eggs nutrition
egg turning
egg weight
egg white glazed porcelain
E. G. H. Landau
E. G. H. Landau (1877—1938)
Egils Saga
EGIS
E-glass fiber
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