Warning: file_put_contents(): Only 0 of 4971 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 国产成人精品男人的天堂,亚洲第一精品视频在线,狠狠躁夜夜躁人人爽野战天天
1. N the change in shape of a material that results when the load to which it is subjected causes the elastic limit to be exceeded and is then removed 永久變形[engineering]