测定脱细胞血管基质中胶原蛋白含量，检测血管脱细胞血管基质的伸长比、极限应力。
The collagen protein level of acellular vascular matrix was evaluated, the elongation ratio and ultimate stress were assayed as well.
胡克定律：只要施与一段金属线的力不超过其比例极限，那么该经书线的伸长量与所施力成正比。
Hook's Law: the extension of a piece of wire is directly proportional to the applied force providing the limit of proportionality is not exceeded.
第5栏，伸长率在极限应力项，在百分比给出了一个说明'韧性的物质。
Column 5, the elongation at ultimate stress, in percentage gives an indication of the 'Toughness of the material.
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