5. 如图4-538所示,用上一步草图轮廓拉伸一体积块,为了便于查看,本人已将第3步闭合的体积块透明化,结果如图4-539所示: 图4-538 图4-539 6. 如图4-540所示插入一有序几何图形集: 图4-540 |
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