Warning: file_put_contents(): Only 0 of 5046 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 gegequ,国产6一区二区三区蜜桃,cao死我吧视频在线观看
1. N the energy usually required to remove an electron from an atom, molecule, or radical, usually measured in electronvolts 電離電勢(shì) ( symbol: )→compare electron affinity