一些人猜测反对的原因是担心很多价格昂贵获利丰厚的新药很可能物非所值。
Some suspect that its opposition stems from the fear that many expensive and profitable pills would be found to be of dubious value.
砷的主要处理方法有硫化物沉淀法，或与多价重金属络合。
Major treatment methods for arsenic include sulfide precipitation, or complexation with polyvalent heavy metals.
多价金属羟基络合物；
应用推荐