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中文摘要：
本文针对目前典型的Bi系和YBCO高温超导带材，在液氮温区下，测量了其在侧向弯曲、径向弯曲及扭曲方式下的临界电流，得到了两种高温超导带材在不同弯曲应变方式下的通流特性曲线，并对实验结果进行了对比分析．结果表明，侧向弯曲应变对两种带材通流特性的影响具有局部性，Bi系带材承受侧向弯曲的能力小于YBCO带材，但其抗扭曲能力要大于YBCO带材．实验结果为高温超导带材在工程上的应用提供参考．
英文摘要：
In this paper, the critical current of Bi-2223 and YBCO HTS tapes under hard bending, easy bending and twisting were measured at liquid nitrogen. The critical current characteristic curves of the HTS tapes were also obtained during the experiment and the results were discussed. The experimental results show that the critical current of the two tapes were both degraded locally under hard bending. Besides, the ability to withstand the hard bending strain of the Bi-2223 is less than that of YBCO. However, the twisting ability of the Bi-2223 is greater than the YBCO. The experimental results play a significance role on the magnet application of the HTS tapes.
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