In the research and development of intelligence system, the computing complexity of reasoning is a important problem.

在智能系统的研究与开发中，推理方法的计算复杂性是一个很重要的问题。

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The chief lesson this teaches us is that making new equipment affordable has become a major problem in the research and development (R&D) process of any major new piece of military hardware.

这给我们的主要教训就是：能承受新装备的开销已成为研究开发军事新硬件设施过程中的主要问题。

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Based on the summary of internal research situation and the condition that we posses, the key problem and development thinking of domestic PTA technology were discussed.

在总结国内研究状况和所具备的条件基础上，论述了PTA技术国产化的关键问题及其开发思想。

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Both executives raise a problem with fixing research and development that should scare executives at less productive companies: Sometimes trying to fix things can just make them worse.

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It follows four years of research and development aimed at finding a natural method of tackling the problem of sea lice.

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Once more: I find it hard to understand how someone who worked as head of Research and Development at Pfizer could possibly deny this basic, universally recognised problem of poor external validity in clinical trials.

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