发布时间:2025-01-31 10:58:12
3600mm-4000mm。
黑板尺寸:高度不应小于1000mm,宽度:小学不宜小于3600mm,中学不宜小于4000mm。黑板下沿与讲台面的垂直距离:小学宜为800--900mm;中学宜为1000--1100mm。黑板表面应采用耐磨和无光泽的材料,讲台两端与黑板边缘的水平距离不应小于200mm,宽度不应小于650mm,高度宜为200mm。
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2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12 2025-01-31 10:58:12联想thinkpad 12代i7商务本高性价比办公47设计47学生适用
2025-01-31 10:58:12