Mean normal diaadmeasurer pitch中点法向径节
normal circular pitch法面齿距;[机] 法向周节;标称节径;法周节
Normal diametral pitch[机] 法向径节;法径节;螺距;法向径节
Mean normal diameter pitch中点法向径节
Mean normal base pitch中点法向基节
Normal base pitch法向基节
normal diametric pitch法向径节
Normal l base pitch法向基节
Normal l circular pitch法向周节