According to the computed result , the structure of NEEC is safe , but its safety margin is small, so the safety of the product should also be ensured through the design.
计算结果表明，该喷管出口锥与延伸锥结构是安全的，但考虑到材料性能的波动，安全余量较小，应从设计上保证产品的可靠性。
A vibration failure mode of structural system was presented according to engineering design criterion. The safety margin equation of the vibration failure mode was developed.
从工程上常用的振动设计准则出发，定义了振动问题的破坏模式，给出了以结构自振频率和外载频率为基本随机变量的安全边界方程。
As the awareness and demand of safety increasing, the concept of safety margin appears more and more in engineering design and People's Daily life.
随着人们对安全认识和需求的不断提高，安全裕度的概念越来越多受到工程设计界及人们日常生活的关注。
It is demonstrated that NHR 200 gadolinia fuel rods can successfully fulfill the requirement of design criteria and possess high margin in safety.
分析结果表明，NHR-200含钆可燃毒物棒能很好地满足堆芯设计的要求，并且有较大的安全裕度。
So it is hard to accurately calculate, and the design only works by experience, which will result in the lack of local strength or excessive safety margin and so on.
对于实际结构，由公式计算的结果往往误差较大，特别是高应力区域，难以精确计算，工程上只能采用经验设计，这样会导致结构的局部强度不足或整体安全裕度过高等不合理现象。
So it is hard to accurately calculate, and the design only works by experience, which will result in the lack of local strength or excessive safety margin and so on.
对于实际结构，由公式计算的结果往往误差较大，特别是高应力区域，难以精确计算，工程上只能采用经验设计，这样会导致结构的局部强度不足或整体安全裕度过高等不合理现象。
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