1)degeneration,退化，变性2)degeneration,变性，退化3)degeneration,变性;退化4)degenerative alterations,退行性变化5)non-degenerate linear transformation,非退化线性变换6)gold-ore districts,退化蚀变
用法和例句
By introducing the non-degenerate linear transformation,the calculation procedure of this type of multi-integration is simplified and the calculation formula is obtained.