The petiole and the stem all posses assimilation, but con-tain very littls mechanical tissue.

叶柄、茎均具同化功能，但机械组织不发达。

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Bifacial leaf and mesophyll tissue contain crystals, phloem is rich in saliferous vacuoles, and the mechanical tissue is developed.

异面叶，叶肉组织中含有晶体，韧皮部内富含含盐液泡泡，机械组织发达。

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Many vessel numbers, small pore, libriform fibres (mechanical tissue)and obvious secondary thickening of xylem tissue are the features of adaptation to the environment.

红树植物导管数量多、管孔小、机械组织为韧型纤维，薄壁组织次生加厚明显是适应环境的特征。

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The extracellular matrix or the collagen gel gives the tissue integrity, and in part, determines its mechanical properties.

细胞外基质或者说胶原蛋白凝胶,使组织成为一个整体,在某种程度上,决定了组织的机械性能

耶鲁公开课 - 生物医学工程探索课程节选

Your surgeon removes your aortic valve and replaces it with a mechanical valve or a tissue valve.

CNN: Aortic valve regurgitation

"It was a mixture of elation and, for lack of a better word, terror, " said Hollister, a professor of biomedical and mechanical engineering who has been studying tissue regeneration for more than 15 years.

CNN: 3-D printer helps save dying baby