合同的明文规定

avoidance of the contract subtraction of terms of the same sign execution of the contract of carriage contract for the supply of labour contract for the payment of goods by instalments contract for the delivery of goods by installments letter of credit terms in terms of improvement of terms principal to the contract express terms of the contract negotiation of contract terms terms of contract express terms express contract contract terms severability of the contract original of the contract essence of the contract condition of the contract amend the terms of LC