apparent area meaning in Chinese

表观面积
名义面积
视面积

So the real surface area of the plastics grinding head is much less than the apparent area
由于sic微粒不导电，磨头实际被镀覆的表面积低于宏观表面积。
The international unit for reporting cloud amount . cloud amount is assessed in total which is the estimated total apparent area of the sky covered with cloud
把天空分为八份， 1份即是八份之一的天空被云遮蔽， 2份即是八份之二的天空被云遮蔽，如此类推。
The international unit for reporting cloud amount . cloud amount is assessed in total which is the estimated total apparent area of the sky covered with cloud
把天空分为八份， 1份即是八份之一的天空被云遮蔽， 2份即是八份之二的天空被云遮蔽，如此类推。