straight sided normal worm 法向直廓蜗杆

straight sided axial worm 阿基米德蜗杆 ; 阿基米德螺杆

straight sided normal worm ZN-worm 法向直廓蜗杆

straight key for worm gear 涡轮用平键

straight side axial worm 阿基米德蜗杆

straight sided regular worm 法背直廓蜗杆

straight sided normnos worm 法向直廓蜗杆

straight profile annulus worm 直廓环面蜗杆

worm with straight generatrix 直纹蜗杆