<p>作平面图形的水平投影。<br><img max-width="300" src="https://learnfile.20230611.cn/learnAppQuestion/de/50/de50c4cc549348d21589d0fe6e32f182.jpg" style="width: 100%;height: auto;"></p> 👤 admin 📅 2024-09-14 👁️ 10 次浏览
