Warning: file_put_contents(): Only 0 of 6159 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 blasting mat例句_blasting mat英汉例句_blasting mat双解例句_魏碑心思朗文词典
The blasting mechanism of smooth blasting soft mat layer charging construction (for example, air layer and layer) is introduced. 以空气垫层和水垫层为例介绍软垫层光面爆破装药结构爆破机理。