比如源程序sum ∶= first+count*10可生成四元式序列，如图1.7所示，其中ti(i=1,2,3)是编译程序生成的临时名字，用于存放运算结果的。 　 图1.7 id1:= id2 + id3 * 10的四元式序列-such as source sum : = 10 * The first count of creating four yuan-sequence, as shown in Figure 1.7, ti (i = 1,2,3) compiler is generating the provisional name, Operational results for the storage. Figure 1.7 id1 : = 10 * id2 id3 the four yuan-sequence