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(三)主要机具修梯田的施工工效 研究施工工效的目的有二:一是为推广实施机修梯田求得施工的工效定额,作为计算机修梯田成本费用的主要依据;二是作为研究机修梯田施工中提高相对工效的基础。
(III) Study on Ergonomics of Construction Works of Main Equipment for Terraced Field There are two purposes of construction ergonomics: one is to obtain the ergonomics quota of construction for promoting the implementation of machine-made terraces as the main basis for the cost of cultivating terraces; and Improve the relative efficiency of the foundation.