extended-chain crystal

例句：

1. 1. The crystals are known for their unique structure and transparency.
   这些晶体以其独特的结构和透明度而闻名。
2. 2.The researcher found that the extended-chain crystals had a higher melting point than other materials.
   研究者发现，这种延伸链状晶体的熔点比其他材料高。
3. 3. The crystals were used in various applications, including electronic devices and optical instruments.
   这些晶体被用于各种应用中，包括电子设备和光学仪器。