PETG（聚对苯二甲酸乙二醇酯-共聚物）与PLA（聚乳酸）作为两种常见的打印材料，拥有着独特的优势与特点。 PLA，全称聚乳酸，是一种新型的生物降解材料。它是由可再生的植物资源（如玉米、甘薯、土豆等）所提取的淀粉原料，经过发酵过程制成乳酸 ...

On October 1st, 1949 a grand ceremony was held in Beijing to mark the founding of the People's Republic of China. Although ...