The results demonstrate that the carbon fibers which have serious skin-core structure, few graphite layers which intricately piled up have low mechanical properties.

结果表明，造成碳纤维力学性能低的直接原因可以归结为严重的皮芯结构、芯部组织疏松或有孔洞出现、晶相少且无明显取向、石墨层排列紊乱。

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Layer by layer, the material will be piled up and at last the workers will put them into a gauze cover. Pegged on various sizes and layers, different types of quilts will be made from the material.

有各种各样的大小和层次的叠放方法，不同类型的被子将被用不同的材料加工制成。

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