The hydrogel is part of a class of materials known as supramolecular polymer networks, or SPNs.

这种水凝胶属于一种被称为超分子聚合物网络(SPN)的材料。

Some use acoustic metamaterials—a class of materials engineered to have surprising effects not commonly found in nature.

其中一些人使用声学超材料——一类经过设计可以产生自然界中不常见的惊人效果的材料。

Today, I find myself enchanted by a unique class of materials that, similar to the mythical Phoenix, can resurrect their initial forms after being deformed - the Shape-Memory Alloys (SMAs).

今天，我发现自己被一种独特的材料迷住了，这种材料类似于神话中的凤凰，可以在变形后恢复其初始形状——形状记忆合金 (SMA)。