樹線性次序 linear order: 線性序; 線性有序類; 直線序列linear tree code: 線性樹碼double order for traversing tree: 遍歷樹的雙重次序symmetric order for binary tree: 二叉樹的對稱次序linear multiplication order: 線性乘法順序下載手機詞典可隨時隨地查詞查翻譯