形状记忆合金
The shape recovery induced by the magnetic field was examined by a three-terminal capacitance method with the 13.3In specimen.Figureshows the recovery strain induced by the magnetic field at 298 K, where a compressive pre-strain of about 3% was applied in the direction plotted with a filled circle in the stereographic triangle shown in Fig.框框里的是什么意思？上面是一小段和这个图有关的句子
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