英语语法分析

The results showed that the ultrafine particles were perovskite form crystal.

结果表明，制备的超微粒子为钙钛矿型晶体。

The perovskite solar cells made previously used an opaque material on the back to collect electrical current.

先前的钙钛矿型太阳能电池使用背面不透明的材料收集电流。

The general methods of making perovskite functional ceramics are solid phase reaction and oxalate decompound.

固相反应法和草酸盐分解法是制备钙钛矿功能陶瓷的常用方法。