关于粗糙度的一些问题，望各位大大能帮小弟解决
昨天的帖子被删了应该是发错地方了，这次不用删了吧.....
小弟手上有一张图档（来自德国），其表面粗糙度标注为Rmax20以及Rmax20*
其测量方法如下：
the surface roughness can max. Ra=20 (acc. to DIN ISO 1302), material separating is allowed
the note means: in a total length of ...mm You measure x segments with a segment length of ... mm
==> ** measurement length is 4.0mm, measurement segment is 0.8, count of segments is 4
==> *** measurement length is 4.0mm, measurement segment is 0.8, count of segments is 3
不知道有没大哥对德国DIN标准有所了解，小弟想弄明白到底图纸要求的粗糙度是多少，国内表示为Ra3.2，Ra1.6 ，Ra0.4等..请指教，感激不尽～～
小弟手上有一张图档（来自德国），其表面粗糙度标注为Rmax20以及Rmax20*
其测量方法如下：
the surface roughness can max. Ra=20 (acc. to DIN ISO 1302), material separating is allowed
the note means: in a total length of ...mm You measure x segments with a segment length of ... mm
==> ** measurement length is 4.0mm, measurement segment is 0.8, count of segments is 4
==> *** measurement length is 4.0mm, measurement segment is 0.8, count of segments is 3
不知道有没大哥对德国DIN标准有所了解，小弟想弄明白到底图纸要求的粗糙度是多少，国内表示为Ra3.2，Ra1.6 ，Ra0.4等..请指教，感激不尽～～
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