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材质：特殊聚氯乙烯膜、橡皮胶。
Material: special polyvinyl chloride (PVC) film, rub.
youdao
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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.
youdao
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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.
youdao