The Prime Power Unit (PPU) is an air- and highway-transportable, trailer-mounted 1.3MW (megawatt) Generator Set, a key component of the Terminal High Altitude Air Defense (THAAD) system.

主动力单元（PPU）是一种可搭载空中和公路运输，拖车式1.3MW （兆瓦）发电机组，这也是终端高空防御系统（THAAD）的关键组成部分。

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After gained the key data on cant of trunnions etc, gun terminal set will finish the count automatically on loading data and transmitting to the showing system of the gun position.

在获得耳轴倾斜角等关键数据后，火炮终端机将自动完成装定诸元的计算并传送到炮位显示系统。

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Next, we investigate the approaches and procedures to set up communications with SIP protocols, and the major theory, constituents and key technologies of the SIP terminal facilities.

本文着重研究了SIP协议中通信建立的方式和过程，以及SIP终端设备的原理、构成和关键技术。

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Mr. MAHTANI: Well, Nigeria is the eighth biggest exporter in the world, and after these wave of attacks last week, which included the hostage taking and an explosion on a pipeline that fed a key export terminal, Nigeria had to shut down about 226, 000 barrels per day, that's about 10% of Nigeria's total production, which are still down.

NPR: Militant Group Targets Oil Producers in Nigeria

Key sections of the main terminal at Glasgow Airport are being refurbished in time for next year's Commonwealth Games.

BBC: Edinburgh Airport

The key, then, is to identify the terminal point of the fifth wave.

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