在Java3D中导入一个三维图形文件。在Java3D中，通过调用类的方法将外部的三维图形文件作为一个对象导入Java3D场景图来。-In Java3D to import a three-dimensional graphics file. In Java3D, the method by calling the class outside the three-dimensional graphics file as an object to import the Java3D scene graph.