摘要 : <正> Ⅰ.INTRODUCTION We need to identify, calculate and simulate the spectrum for analyzing NMB spectrum. The computer has afforded us the convenience of calculation and simuation, and the only thing left for analyzers to do is to... 展开 <正> Ⅰ.INTRODUCTION We need to identify, calculate and simulate the spectrum for analyzing NMB spectrum. The computer has afforded us the convenience of calculation and simuation, and the only thing left for analyzers to do is to identify the spectrum rapidly and accurately. In this paper, a method for identifying the ABX_n system is introduced. NMB spectrum of the ABX_n system consists of an AB part and an X_n part, and its structure was presented with complex relation before. We 收起