螺纹联接的结构设计中,通常要采用凸台或凹�作为螺栓头和螺母的支承面,其目的是使螺栓免受弯曲和减小加工? 知乎 Template




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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )


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tomski螺纹联接的结构设计中,通常要采用凸台或凹�作为螺栓头和螺母的支承面,其目的是使螺栓免受弯曲和减小加工? 知乎 coloring