This paper discusses the key problems in the design of hydraulic control system of concrete agitating lorry.

这篇论文探讨混凝土搅拌输送车液压控制系统设计中的关键问题。

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She says Florida's problems in 2000 were people problems and ballot design problems, not technology issues.

CNN: Voting methods under close watch

One of the big design problems we had to solve was how to make this natural.

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There are slight problems with the design choices made with the iPhone 5.

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