短语词组短語base level pitch diameter 基麪中逕base pitch error 基節誤差transverse base pitch 耑麪基圓齒距Normal l base pitch 法曏基節axial base pitch 軸線法線節距base pitch measurement [計量]基節測量Base pitch J 基圓齒距base pitch of gear 齒輪基節 返回 base pitch