conic section造句
Byusingtransformationthought,thispaperobtainsthefocuschordofallkindsofconicsectionthroughanalyzingasampleinconicsectionteaching.Thefixedcurvetraversedbyageneratrixingeneratingaconicsectionoracylinder....
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conicself-programmingcontrollerconjugatediametersofaconicconicprojectionwithtwostandardparallelAnoncoplanarconictransferarithmeticbasedontransfertimeconstraintThispaperintroducesAveragingarchareaprope...