短語詞組短語assignable of cause of variation 系統(tǒng)性波動controlable assignable cause 可控?常因子Detect Assignable Cause 發(fā)現(xiàn)可查明原因Without An Assignable Cause 沒有轉讓原因There is no assignable cause 根本提不出任何理由 返回 assignable cause