Each Contracting State shall recognize an agreement in writing under which the parties undertake to submit to arbitration all or any differences which have arisen or which may arise between them in respect of a defined legal relationship, whether contractual or not, concerning a subject matter capable of settlement by arbitration. 各缔约国应承认书面协议，根据该协议，各方当事人承诺将所有或任何已经产生或可能产生的、关于可通过仲裁方式解决的标的物的、不论是契约性还是非契约性的既定法律关系中的争议，提交仲裁解决。 The term "agreement in writing" shall include an arbitral clause in a contract or an arbitration agreement, signed by the parties or contained in an exchange of letters or telegrams. “书面协议”一词应包含合同中的仲裁条款，或双方签署的仲裁协议，或包含在信函或电报往来中的仲裁协议。