劣化， れっか

1. deterioration (in quality, performance, etc.), degradation, worsening 2. (visible) aging, becoming unattractive (due to aging)

劣化，恶化；老化

more...           more words...

音读: レツ  

训读:おと.る  

日检:1 grade:8 笔画数:6 部首:19

音读: カ   ケ  

训读:ふ.ける  ば.ける  ば.かす  け.する  

日检:2 grade:3 笔画数:4 部首:21