The prototype began its flight test program in early 1960, but unfortunately was badly damaged in an accident that was not the fault of any design deficiency.

原型1960年年初开始的飞行试验计划，但不幸的是在一次事故中严重，这不是任何设计缺陷故障损坏。

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Some improvements were presented by analyzing and demonstrating for the structural design deficiency of the bleed valve of a heavy duty gas turbine bleed system.

针对某重型燃气轮机放气系统放气活门在结构设计上存在的问题，经过分析和论证，提出了改进方案，通过计算验证了该方案可以实施。

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Even the language designers quickly saw a deficiency in this design - in hindsight, it's a bit naive to think that there can never be behavior that isn't attached to a class.

即使是语言设计者也很快看到了这种设计缺陷—事后看来，认为不存在不需要附加到类的行为有点天真。

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