This paper analyzes the failures of air operated double position butterfly valve used in car type furnace, and puts forward improving plan.

本文对台车炉气动双位蝶阀产生的故障进行了分析，并提出了改进方案。

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Among our products, the central type butterfly valve and double eccentric butterfly valve are both awarded with National Hi and New Technological products, and National Level Spark Project.

本公司中心型蝶阀、双偏心蝶阀获得国家高新技术产品和国家级星火项目。

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Through theoretical analysis and numerical simulation, the pattern reconfigurable feasibility of the structures of butterfly, folded dipole and double-feed is analyzed.

本文通过理论分析和软件数值仿真，分析了蝶形结构、折合偶极子结构以及双馈方式实现方向图可重构的可行性。

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Similarly, Christopher said concerns about possible remedies persuaded the Gore camp early on to shift from its focus on double-punched, so-called "butterfly ballots, " in Palm Beach County to disputed ballots in areas where there appeared to be irregularities.

CNN: latimes.com: Anxious Christopher sounds conciliatory notes

The Butterfly Suite offers private space for parents and has been equipped with a double bed, sofa, fold-down chair bed, tea and coffee-making facilities, a TV and an en-suite washroom.

BBC: Simon Gill