还有许多小组承担着其他科研任务，美国国国家航空航天局正在建立一个移动控制中心，促使“全球鹰”终将翱翔全球。

Multiple teams are developing other research missions, and NASAis now working on a mobile communications centre that will give the aircrafttruly global coverage.

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首先在简要说明CMT系统整体结构组成的基础上，对其中基于IP连接和移动软交换的移动交换控制中心(MSC)进行了介绍。

At first, this dissertation briefly explains the whole architecture of CMT system and introduces the Mobile Switching Center (MSC) that is based on IP-Connect and Mobile Softswitch.

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在马达控制中心（ MCC ）为21 50马力发动机是第一个移动必须建立和美国消防协会批准为20和UL 215 。

The motor control center (MCC) for the 21 50 HP motors was the first MCC to be built and approved per NFPA 20 and UL 215.

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