ammonium soil铵质土ammoniumn.氨盐基ammonium tungsten oxide sulfide二硫代钨酸铵ammonium oxalate crystal violet草酸铵结晶紫ammonium nitrate gun propellant硝酸铵发射药ammonium dibutyl dithiophosphate二丁基二硫代磷酸铵ammonium di-hydrogen phosphate磷酸二氢氨ammonium sulfate gradient method硫酸铵梯度法ammonium diethyl dithiocarbamate二乙基二硫代氨基甲酸铵ammonium - oxidizing bacterium亚硝化细菌ammonium hydroxide precipitation氢氧化铵沉淀ammonium ferric sulfate catalyst硫酸铁铵催化剂