homopolar crystal

例句：

1. 1. Homopolar crystals are used in various applications such as electronic devices and sensors.
   同极晶体被用于各种应用，如电子设备和传感器。
2. 2.The study of homopolar crystals has significant implications for the field of materials science.
   研究同极晶体对材料科学领域有重大意义。
3. 3.Due to their unique properties, homopolar crystals have been the subject of many research efforts.
   由于其独特的性质，同极晶体一直是许多研究努力的焦点。