Braking system double pipe air brake system, parking brake, exhaust brake.

双管路气制动系统，带驻车制动、排气制动。

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On the base of both consideration of heat transfer performance and resistance, the optimization and research are carried out on single spiral duct double pipe condenser.

本文在综合考虑传热性能和摩擦阻力等因素的基础上，对单螺旋槽套管式冷凝器的结构进行了优化和研究。

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Based on a certain engineering project, the design and construction technology of double pipe and double liquid grouting method for leak blockade in deep excavation retaining structure are introduced.

在深基坑围护结构中采用双管双液法注浆工艺堵漏的设计及施工工艺，工程实践证明是成功的。

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The wheat is washed with prayers the preceding day, and then carried to a large stone mortar, to the accompaniment of music from the davul drum and zurna double-reed pipe.

UNESCO: Intangible Cultural Heritage

That's double the amount of data used streaming the same video over a 3G link, because the fatter pipe lets more data through.

WSJ: Video on New Apple iPad Eats Up Monthly Data Plans