US2018031757(3M INNOVATIVE PROPERTIES CO [US])
[0095] Each split spreading structure 542 on the structured surface 544 has a high spreading portion 542 a and a low spreading portion 542 b disposed alongside each other. In the figure, the high spreading portions are shown shaded to indicate a roughened surface in comparison to the smoother surface of the low spreading portion 542 b.
最新の画像[もっと見る]
※コメント投稿者のブログIDはブログ作成者のみに通知されます