重点研究了一种基于灵敏度矩阵对桥梁进行损伤识别的方法。

A method for bridge damage identification based on the sensitivity matrix theory was mainly studied.

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二度烧伤这种烧伤既损伤了皮肤的表层， 又损伤了皮肤的第二层。

Second degree burns These affect both the top and the second layer of the skin.

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一度烧伤：只损伤皮层的最上层。

These affect only the top layer of the skin.

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一度烧伤：只损伤皮层的最上层。

These affect only the top layer of the skin.

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