directed areas的用法和样例：
例句
- By defining the directed area of polygons, We went into its properties and applications andobtained several new fixed value theorems of polygons.
通过给出平面多边形的有向面积，探讨有向面积的一些性质和应用，提出一平面多边形的若干新的定值定理。
directed areas的相关资料：
临近单词
Directoire
direct
direct-injection cylinder head
direct allocation water quantity
direct hypersensitivity reaction
directing seeding rice seed rope
direct access program name table
direct current partial discharge
Direct current of brownian motor
direct-injection enthalpimetry
direct-viewing teaching method
direct current integrating meter
