The 2d and 3d drawing you provided is not the same, can you tell me which one is correct?
你提供的2d产品图与3d产品图不一致，请问以哪一个图面为准？
It is hard to judge which one is correct before establishment of uniform formal descriptive method.
在没有建立统一的形式化描述方法之前，很难判定哪种理解是正确的。
It is hard to judge which one is correct before establishment of uniform formal descriptive method.
在没有建立统一的形式化描述方法之前，很难判定哪种理解是正确的。
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