【经】 按每期相等的偿付额计息

interest on payment for purchases periodic payment interest payment fund for payment of principal and interest on external debts on equal terms with on an equal footing base on on an equal footing with interest on investment interest on deposit accrued interest on loan accrued interest on mortgages equal-annual-payment method depreciation-equal-annual payment payment of interest interest payment date interest payment period interest payment allowance equal-annual depreciation payment method on equal terms