权威例句
EllipsographEllipsographEllipsographA MEW ELLIPSOGRAPH?Ellipsograph as a drafting toolConjugate EllipsographEllipsograph for pantograph PatentA Lever-type EllipsographCycloid Ellipsograph and Its DesignCombination compass and ellipsographA Kind of Ellipsograph Which's Long and Short Shaft's Radius' Length can be Ajusted SteplesslyApplication of Ellipsograph-Mechanism in Pipe Auto-Handling Device and its Energy Consumption ComputationNote Upon a Representation in Space of the Ellipses Drawn by an Ellipsograph
