状態遷移図

State transition diagram

可塑剤 (kasozai)

plasticizer

建材 (kenzai)

building materials

光触媒 (hikari shokubai)

photocatalyst 

a photocatalyst 

半導体光触媒 (handoutai hikari-shokubai)
semiconductor-based photocatalysts

修復する (shuufuku suru)

repair