update method

• 更新方法

update method的用法和样例：

例句

1. Control should include original values when calling update methods of the source data object.
   控件应该包括调用源数据对象的更新方法时的原始值。
2. This paper describes a method for orthophoto updating rapidly based on a local interest area in the case of rapid topographic support.
   本文探讨了一种在应急测绘保障情况下基于城市目标区域的正射影像快速更新方法。