生命周期影响评价是生命周期评价的重要环节。
Life cycle impact assessment is one of the most important processes in life cycle assessment.
生命周期影响评价指标和优化方法可用于各种燃料的影响评价和优化，具有重要的应用价值。
Lifecycle effects evaluation indexes and its optimization methods which was of high use value could also be applied in the effects evaluation and the optimization for other kind of fuel.
介绍了在影响评价中确定权重的三种方法，即专家法、层次分析法和线性回归方程法，为今后进行生命周期影响评价和研究提供了依据。
The paper introduced three methods, which decide weight in life cycle impact assessment, i. e. Delphi technique, analytic hierarchy process and linearity regress technique.
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