Warning: file_put_contents(): Only 0 of 6073 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 weapon-grade例句_weapon-grade英汉例句_weapon-grade双解例句_沉淀汉英词典
Their pureness deterimined in methods of two different priciples and conformed to the technical norm of first grade military standard substance. 四种标准物质采用两种不同方法定值,结果均达到一级军用标准物质要求。