单词	lead angle
释义	lead angle noun ˈlēd- : the angle between the tangent to a helix or screw thread and the plane perpendicular to the helical axis Word History Etymology lead entry 2
随便看	Hesperornis Hesperornithiformes Hesperus Hess Hess image Hess's law Hesse hessen hessian Hessian andiron Hessian boot Hessian crucible Hessian fly hessians hessite hessites hessonite hessonites hest hesthogenous Hestia hestiae hestias Heston and Isleworth hests

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