清单1展示了主要的x3d结构(完整的文件请参阅下载一节中的fig . x3d)，它们用来创建图1中的图形，使用了FreeWrl浏览器(请参阅参考资料)。

Listing 1 shows the main x3d structures (see fig.x3d in Download for the complete file) that's used to create the image in Figure 1, which was taken using the FreeWrl browser (see Resources).

youdao

清单1展示了主要的x3d结构(完整的文件请参阅下载一节中的fig . x3d)，它们用来创建图1中的图形，使用了FreeWrl浏览器(请参阅参考资料)。

Listing 1 shows the main x3d structures (see fig.x3d in Download for the complete file) that's used to create the image in Figure 1, which was taken using the FreeWrl browser (see Resources).

youdao