meta-compound

例句：

1. 1. The meta-compound in the sample reacted withthe acid to form a new compound.
   样品中的元化合物与酸反应形成了一种新的化合物。
2. 2.Meta-compounds are often usedin electronic devices as conductive materials.
   元化合物常用于电子器件中作为导电材料。
3. 3.The study of meta-compoundsis important for understanding the properties of materialsat high temperatures.
   研究元化合物对于理解高温下材料的性质至关重要。