一件是猪皮的，另一件是牛皮的。

One is made of pigskin, and the other made of cowhide.

初步探讨了猪皮胶原在原纤维水平上的精细结构。

The fine structure of natural pig collagen was also discussed in detail.

他们走进一个房间，这儿的墙面被印着金花的猪皮所覆盖。

They entered a chamber where the walls were covered with hog's leather, and printed with gold flowers.

研究了用紫外分光光度法测定猪皮及其脱脂废液中油脂含量的方法。

A new method about how to measure the fat content of pigskin and the degreased water by UV Spectrophotometry.

合成猪皮面料和柔软的氯丁橡胶的支持者提供下对皮肤的舒适度。

Synthetic pigskin lining and soft neoprene backer delivers next-to-skin comfort.