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life circle
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  life circle
The life circle and bionomics ofLymantria dispar was studied from the May to the July of 1997 in Tulihe Forestry Enterprise of Inner Mongolia.
      
This material can be used and reused throughout its life circle from production and collection, through to recycling and eventually energy recovery.
      
Even if programmers work with greatest deliberation testing is still one of the most important steps in the software development life circle.
      


A new concept is proposed that susceptibility, vulnerability, reliability, maintainability and supportability should be essential factors of aircraft survivability. A weight coefficient method and a synthetic method are proposed to evaluate the aircraft survivability based on the essential factors. Considering that it has to take cost to promote aircraft survivability, a synthetic tradeoff model of aircraft survivability and life circle cost is built. The aircraft survivability evaluation methods and synthetic...

A new concept is proposed that susceptibility, vulnerability, reliability, maintainability and supportability should be essential factors of aircraft survivability. A weight coefficient method and a synthetic method are proposed to evaluate the aircraft survivability based on the essential factors. Considering that it has to take cost to promote aircraft survivability, a synthetic tradeoff model of aircraft survivability and life circle cost is built. The aircraft survivability evaluation methods and synthetic tradeoff model of aircraft survivability and life circle cost would act actively on aircraft survivability design and promotion.

分析了飞机生存力的影响因素,基于每个因素对生存力的影响重要程度提出了评估飞机生存力的权重系数法和综合评估法;并考虑到飞机生存力的提高必须以费用作为代价,提出了一种飞机生存力/寿命周期费用综合权衡方法。飞机生存力评估方法和飞机生存力/寿命周期费用综合权衡方法的提出,将对飞机生存力提高和生存力设计产生积极的影响。

 
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