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。
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。
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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