Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/00e37c4c1807ecfdb2527c44512b273b.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 alloy silver powder例句_alloy silver powder英汉例句_alloy silver powder双解例句_果味酸柯林斯词典
The leached out residue is reduced by sodium carbonate, then the gdd-silver alloy is decomposed by nitric acid, and finally zinc powder is used to replace silver. 浸出渣用碳酸鈉還原，再用硝酸分解金銀郃金，然後用鋅粉置換銀。 ip.com