North American Digital Hierarchy北美的数字的层次 Nicotinamide Adenine Dinucleotide辅酶 Nicotinamide Adenine Dinucleotide plus HydrogenNicotinamide腺嘌呤二加上氢 reduced form of nicotinamide-adenine dinucleotid还原型烟酰胺腺嘌呤二核苷酸,还原型辅酶I Nicotinamide Adenine Dinucleotide HealthNicotinamide腺嘌呤二的健康 Nicotinamide Adenine Dinucleotide - Hydrogen (reduced)Nicotinamide腺嘌呤二氢(减少)-