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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	downside downside up downsides downsitting downsize downsized downsizes downsizing downsizings downslide downslides downslope downslopes downsman downsmen downsome downspins downspout downspouts downstage downstager downstages downstagest downstairer downstairest

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