成片的

The mechanical tissues were mainly composed of fibre, flakily situated in the tops and bottoms of most veins.

由纤维组的机械组，存在于绝大多数叶脉的上下方。

SEM showed the porous structure of the CTCP and the seeded hPDLCs were well attached to the CTCP with cytoplasmic extensions and lamellipodia.

扫描电镜下可见材料具有良好的多孔网状结构,人牙周韧带细胞出多个伪足样突起,紧密贴附在材料表面,细胞沿材料的孔隙边缘生长并连接。