二层牛皮

Two-layer cowhide

以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译

短语

1
用内袋是三层牛皮纸，外袋是二层牛皮包装，应完整无破损，防潮防污染。
With the inner bag is three layers of kraft paper, the outer bag is two layers of kraft packaging, should be complete without damage, moisture and anti pollution.
2
第一及第二衬料：造精装书时，在书脊上所加的两层衬料。第一层通常是纱布，第二层是牛皮纸。
First and second linings: the two linings applied to the spine of the book in case binding. The first lining is normally mull, the second lining normally kraft.
3
针对牛皮二层绒面革各工序工艺技术关键进行探讨，通过正确的工艺控制和选择合适的皮化材料，达到理想的绒面革效果。
The process and key point for producing cattle napped split leather were discussed, and perfect results were gained with appropriate chemicals and technology.

二层牛皮
二层牛皮是头层牛皮,就是牛皮第二层或三层皮覆上PVC 、 PU 膜，二层皮覆涂一层硅胶可以制作为高级皮革，也称为”牛剖层移膜皮革“。高级硅胶皮比头层皮还要贵，高级男包大部分是用硅胶皮做的，不易磨损，比头层皮耐用，主要看这加工艺。皮角及碎皮碾碎再加化工加工成皮即是再生皮，作为皮带箱包内里定型衬层！

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