活动高规格、高品质、高权威等特点。
Activities, high specification, high quality, high authority and so on.
这些标准件的特点是具有相同或相似的结构特征，只是尺寸规格有所不同。
These standard parts are characterized by the same or similar structure, but different sizes.
这些标准件的特点是具有相同或相似的结构特征，只是尺寸规格有所不同。
These standard parts are characterized by the same or similar structure, but different sizes.
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