针对不同的变量类型，首次提出了数值型变量的区间集表示和基本运算方法，定义了布尔型区间代数和引用型区间代数；
The concept of numeric interval-set is proposed for the first time, and fundamental operations on interval-sets are defined.
将波浪辐射应力与抛物型缓坡方程中的待求变量联系起来，提出了一种计算辐射应力的新方法，并用有限差分法对控制方程进行了数值求解。
A new method for the solution of wave radiation stresses is proposed by linking wave radiation stresses with the variables in the parabolic mild-slope equation.
将波浪辐射应力与抛物型缓坡方程中的待求变量联系起来，提出了一种计算辐射应力的新方法，并用有限差分法对控制方程进行了数值求解。
A new method for the solution of wave radiation stresses is proposed by linking wave radiation stresses with the variables in the parabolic mild-slope equation.
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