关于helicoid的百科

• involute helicoid造句怎么写

• basecylinderofinvolutehelicoidwormbasediameterofinvolutehelicoidwormThesphericalinvolutehelicoidequationanddividingsphericalhelicoidequationofgrindingwheelareestablished.Thehelicalmotionparametersandhelicoidleadaregiven.Abstract:Inthispaper,theformul...
• 2018-07-0630796