问题
问答题 简答题
激光3D打印有什么方法？各自特点？适用材料？
答案
参考答案：
激光立体印刷术：以高分子聚合反应为基本原理，适用于塑料铸型。
选择性激光烧结技术，选择性激光熔化技术：以烧结和熔化为基本原理，适用于金属实体。
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激光3D打印有什么方法？各自特点？适用材料？
参考答案：
激光立体印刷术：以高分子聚合反应为基本原理，适用于塑料铸型。
选择性激光烧结技术，选择性激光熔化技术：以烧结和熔化为基本原理，适用于金属实体。
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 Dannii Minogue, the Australian singer and actress, is a vegan(纯素者). She doesn't eat any 1 , fish or dairy products. "When I was thirteen I began to find meat too fatty. I felt very 2 when I ate it. So I stopped eating meat and became a vegetarian. "Four years later, Dannii stopped 3 eggs, milk and cheese, because they were bad for her 4 . Also she 5 fish and became a vegan. then she started reading about factory farming-how we keep and kill animals 6 bad conditions. She was disgusted(恶心) by what she read, " Factory farming is terrible because the animals suffer(遭受) so 7 , She knew that her 8 to become a vegan was right for the animals as well as herself. Brian Harvey, a singer with the group East 17, 9 eating meat and junk food. "I love my hamburgers and fried chicken. I always ask them 10 is vegetarian food anyway. Tomatoes, green peppers, onions, No, thanks! " | ||||
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