The design of a high efficiency X-band 40W space TWT is introduced in this paper and the development for this TWT was succeed.

本文根据卫星通讯的需要，给出了高效率X波段40W空间行波管的设计，并成功研制出了样管。

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XOJET also touts an advantage in the efficiency of operating one aircraft class, super-midsize jets. XOJET operates the Cessna Citation X and the Bombardier Challenger 300.

XOJET的优势在于其运营高效的单一机舱和超级中型客机，他们运营的飞机类型包括赛纳斯Citation X和庞巴迪Challenger300客机。

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Starting with Lotus Notes 6.x, there have been major changes to replication that greatly increase efficiency both in speed and in network usage.

从 Lotus Notes 6.x 版开始，对复制进行了较大的修改，因此大大提高了速度和网络使用的效率。

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The engine will be based on the Porsche RS Spyder racing engine that demonstrated its impressive performance and efficiency through multiple Michelin Green X Challenge victories in the American Le Mans Series, the Le Mans Series and the 24 Hours of Le Mans.

ENGADGET: Porsche opens 918 Spyder plug-in supercar pre-orders, $845,000 gets you a ticket to ride