Red Lead Red lead is made by calcining litharge in a muffle furnace.红铅是由正方铅矿在马福炉中煅烧得到的.Some manufacturers used a little fumed litharge and basic lead sulfate here also.有些制造厂也用少量细质的一氧化铅和碱式硫酸铝.Potash micatization is one of...
He is widely regarded as Hungary's most skilful politician.他是公认的匈牙利最有手腕的政治家。Her skilful fingers spun the wool out to a fine thread.她那灵巧的手指把羊毛纺成了细毛线.He's not very skilful with his chopsticks [ at using chopstick...