发布时间:2025-02-07 12:04:40
饮料瓶可以做花瓶、储物罐、笔筒、筷子筒、花盆、捕蚊器、灯罩等。饮料瓶即是装饮料的容器,材质一般是塑料,其底部都有一个带有箭头的三角形标志,里面标有数字,不同的数字代表不同的材料。如pet01,其材质为聚对苯二甲酸乙二醇酯;pet02,材质为高密度聚乙烯。
铸铁和钢材要焊接一起用什么焊条好铸铁件和特种钢板用什么焊条焊机什么样的工艺
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