Warning: file_put_contents(): Only 0 of 4987 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 中文字幕人妻无码视频,亚洲午夜精品视频,无码人妻丰满熟妇片毛片
1. N a grey salt of calcium used in the production of acetylene (by its reaction with water) and calcium cyanamide. Formula: CaC2 碳化鈣 (Sometimes shortened to carbide)