來給我買單
3D printing - Wikipedia, the free encyclopedia今天是週末,我們高中同學要在天安酒店搞一次同學聚會。自從畢業後,好多同學都混得有模有樣,我卻默默無聞,在一家工廠當製圖員,每月和丈夫一起靠著不多的收入共同撐著這個家。我本不打算去,可禁不起同學們的一片盛情,只好答應。丈夫正在幫兒子復習功課,兒子就要上初中了,為了上一所好中學,這段時間丈夫沒少操心,東3D printing (or additive manufacturing, AM) is any of various processes used to make a three-dimensional object.[1] In 3D printing, additive processes are used, in which successive layers of material are laid down under computer control.[2] These objects ...
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