Warning: file_put_contents(): Only 0 of 5261 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 low-atomic-number material是什么意思，low-atomic-number material的翻译，low-atomic-number material音标、读音、用法和例句_沉淀汉英词典
The density measurement technology of foam material with low atomic number was established by low energy X-ray radioscopy . 采用低能X射线对低原子序数泡沫样品进行透射照相，以胶片作为记录介质，对材料密度进行测量。