Electronic data Interchange for Administration, CommerceandTransport (EDIFACT) defines which data segments are mandatory or optional, and the number and order of elements.
定义了数据的哪些节是必须的或者是可选的，数据节的数量和数据元素的顺序。
2
It may distort the natural flow of commerce, services andtransport.
它可能会阻碍地区间的商业、服务和交通的自然流通。
3
Where a public air transport enterprise fails to obtain operating licence, no registration shall be performed for such enterprise by the administrative department for industry andcommerce.