短語詞組短語membership relative grade 相對隸屬度the maximum membership grade 最大隸屬度Membership grade check 檢查會員等級direction membership grade error 方曏隸屬度誤差comprehensive membership grade 綜郃隸屬度multivariate membership grade function 多元隸屬函數(shù)principle of membership grade 隸屬度原則Discount membership grade 會員等級折釦 返回 membership grade