N-COUNT (脚)步;步子 If you take a step, you lift your foot and put it down in a different place, for example when you are walking. I took a
佳答案: STP文件是cad绘图软件的3D图形文件的格式(扩展名),其中包含三维对象的数据;提供对产品模型数据交换的支持。是基于ASCII格式符合STEP应用协议ISO 10303-21
N-COUNT (脚)步;步子 If you take a step, you lift your foot and put it down in a different place, for example when you are walking. I took a
佳答案: STP文件是cad绘图软件的3D图形文件的格式(扩展名),其中包含三维对象的数据;提供对产品模型数据交换的支持。是基于ASCII格式符合STEP应用协议ISO 10303-21