采用四边形面积坐标来代替等参坐标。
The quadrilateral area coordinate is adopted instead of the isoparametric coordinate.
构造四边形单元时，应用面积坐标方法有其优点。
The area coordinate method has been successfully applied to construct triangular elements.
构造四边形单元时，应用面积坐标方法有其优点。
The area coordinate method has been successfully applied to construct triangular elements.
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