GD&T is an international language that is used on engineering drawings to accurately describe a part.
GD&T 是用来在图纸上精确描述零件的国际语言。
GD&T is a precise mathematical language that can be used to describe the size, form, orientation and location of part features.
GD&T 是精确的数学语言，用来描述零件形体的尺寸、形状、方向和位置。
GD&T is a design philoSOPhy (functional dimensioning) on howto design and dimension parts.
GD&T 是关于设计和标注零件的一种设计原理。（基于功能的尺寸标注）
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