The foam dressing may have a water-impervious backing layer, 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。
The invention discloses an alloy coating bushing which comprises a steel backing layer, 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。
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.
拥有粘性背面的基板比最后制成的软性显示器和离形层略大，以便让它固定在玻璃板上。
The backing material must be as smooth as possible, and the circuitry sealed beneath a layer composed of a polymer-metal-polymer sandwich.
这种电路的基板材料也非常平滑，在这个电路的下次是由聚合物-金属-聚合物这种类似三明治的夹心结构组成的。
Backing paper: a base layer to give strength or support to a top layer. Depending on the requirement of the top layer, backing papers vary very much in nature.
托底纸：用来支撑面层的纸以啬强度或承托面层。视乎面层的要求，托底纸有各种极端不同的性质。
A backing is permanently fixed to one side of the bag and a portion, of flexible material, which is provided with a self-adhesive layer, is detachably fixed onto said backing.
在袋的一个侧面上不能松开地固定一个载体，并且在该载体上可松开地固定一个设置有自粘接层的、用挠性材料制造的段。
Depending on the requirement of the top layer, backing papers vary very much in nature.
视乎面层的要求，托底纸有各种极端不同的性质。
This backing is used for one-side automatic welding to reinforce F/G layer. It is also easily used at bending parts.
本衬垫供单面自动焊接用F/G层的加强，也易用于弯曲部分。
This backing is used for one-side automatic welding to reinforce F/G layer. It is also easily used at bending parts.
本衬垫供单面自动焊接用F/G层的加强，也易用于弯曲部分。
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