Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/98cb80fc9c9585c24086d6c55e946948.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 low-atomic-number material例句_low-atomic-number material英汉例句_low-atomic-number material双解例句_甲百匯小鸡词典
The density measurement technology of foam material with low atomic number was established by low energy X-ray radioscopy . 採用低能X射線對低原子序數泡沫樣品進行透射照相，以膠片作爲記錄介質，對材料密度進行測量。