拉杆是由热塑性碳纤维复合材料制成的，与传统的建筑材料如钢铁和铁制品相比，它具有高强的抗拉强度，有助于加强建筑稳定性。
The rods are made from thermoplastic carbon-fibre composite, which has a high tensile strength that rivals traditional building materials like steel and iron, and could help to reinforce the building.
连续纤维加强复合材料因为具有良好的力学性能，在工程领域中获得了重要的应用，但因为成本高，且制作有困难也限制了其广泛应用。
Continuous fiber reinforced composites have been applied to engineering area extensively because of its good mechanical performance, but high cost and difficulty of fabrication limit the application.
文中给出了复合材料纤维加强方向不同时位移与应力强度因子的关系式。
The relation between the displacements and the stress-intensity factors is given when the reinforced fiber of composite material are in different directions.
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