该文给出了一些数值求积公式的渐近性质，这些公式包括求积分的矩形法则、梯形法则和抛物线法则。

This paper gives asymptotic properties of some numerical integral formulas, these formulas include rectangle rule, trapezoid rule and parabolic rule.

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前两种方法可实现点、线和矩形区域的动态定位，后一种方法则可实现任意区域(包括带文字区域)的动态移动。

The fore two methods are generally used in the dynamic location for points, lines, rectangles and other shapes, and the last one is used in the dynamic moving of any regions that may contain texts.

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