For example, when the air traffic control system development was initiated, three-tier client server systems and airline deregulation did not have to be considered.
例如，当开始开发航空交通控制系统时，三层客户-服务器系统及航线异常情况并没有被考虑在内。
A three-tier enterprise architecture consists of a client tier, middle tier, and a data tier.
一个三层的企业架构由客户机层、中间层以及数据层组成。
The WebSphere XD use case mainly consists of three tiers which are named client tier, DMZ tier, and middleware tier.
WebSphere XD 用例主要由三个层次组成，即客户端层、DMZ 层和中间件层。
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