The foam dressing may have a water-impervious backinglayer, which extends all the way over the top of the dressing and down to the wound-contacting surface.
泡沫敷料可具有不可透水的背衬层，该背衬层一直在敷料顶部上延伸并向下延伸到伤口接触表面。
2
The invention discloses an alloy coating bushing which comprises a steel backinglayer, a substrate layer, a nickel grid layer and a friction-reducing layer which are sequentially arranged.
本发明公开了一种合金镀层轴瓦，包括依次设置的钢背层、基底层、镍栅层和减摩层。
3
The substrate, which has an adhesive backing, is made slightly larger than the final flexible display and the debonding layer, so it stays steady on the glass.