Warning: file_put_contents(/www/wwwroot/ppbbu/bieo.cn/cache/8520f5184f54a6d94cdd3a4f52572e69.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/bieo.cn/index.php on line 58 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_衣物护欧路词典
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。