文章中并未详细说明“Major engineering”具体指什么，按照风电场建设规范，推测：应该是指道路建设，电厂地基搭建，变电站建设等工程 Users should apply this LCA data for evaluating the environmental impacts associated with the construction of wind farms based on the inclusion of materials and processes described. It is imperative that users adhere to ISO 14040 and ISO 14044 standards to assess the GHG emissions over the full life cycle of wind turbines when utilizing this data. Caution should be taken to ensure representativeness of the data when extrapolating to different geographical locations or technological contexts. It is also advisable to consider potential methodological changes over time and updates in emission factors from newer databases or future surveys.