For the case when a=b, the result can be obtained.
For the case when a=b,是同位语从句,这句话是不是省略了that
即 For the case that when a=b,the result can be obtained.
For the case when a=b, the result canbe obtained. 本身是一个完整的句子,when a=b本身就是从句,其前不能再用that(即不存在省略that一说)。其中的等号相当于动词equals。即原句相当于:
For the case when a equals b, theresult can be obtained.
句子大意为:对于a等于b这种情况(即:如果a=b),就可以得到这个结果。