常見例句雙語例句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 返回 alloy silver powder