Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/4a6d6d9499214d9e4401d2264ff39774.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 optic band-gap是什么意思，optic band-gap的翻译，optic band-gap音标、读音、用法和例句_甲百汇小鸡词典