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	hydrants hydraotes hydrarch hydrargillite hydrargyrums hydras hydrase hydrases hydrastes hydrastines hydrastises hydrastisses hydrate hydrated hydrated alumina hydrated lime hydrates hydrating hydration hydrations hydrator hydrators hydratropic acid hydraucone hydrauli

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