Thus, when the elements lead and sulfur are combIned In the proper proportion, they form a compound called lead sulfide.
因此，当铅和硫以适当的比例结合在一起时，它们便形成了一种叫铅硫化物的化合物。
The zinc-rich Thousand-year-egg is made with a new lead-free formula, that is the zinc compound and toon instead of lead oxide, water soluble alkaline fibrous membrane instead of mud wrap.
富锌松花皮蛋是采用新型配方，利用锌的化合物和香椿组合取代氧化铅，实行无铅加工。同时采用水溶性碱性纤维膜取代黄泥包裹。
The zinc-rich Thousand-year-egg is made with a new lead-free formula, that is the zinc compound and toon instead of lead oxide, water soluble alkaline fibrous membrane instead of mud wrap.
富锌松花皮蛋是采用新型配方，利用锌的化合物和香椿组合取代氧化铅，实行无铅加工。同时采用水溶性碱性纤维膜取代黄泥包裹。
应用推荐