- 27-7-0 繪圖步驟
- 27-7-1 主體特徵
- 27-7-2 斜面特徵
- 27-7-3 薄殼特徵
- 27-7-4 圓柱特徵
- 27-7-5 六角特徵
- 27-7-6 內外圓角特徵
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