Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/8e2bdb50d4956a08115cfb5cdac28ff7.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 spherical involute teeth是什么意思，spherical involute teeth的翻译，spherical involute teeth音标、读音、用法和例句_94生活常识网有道词典