... Improve Labor Efficiency 提高劳动效率 commercial labor efficiency 商业劳动效率 direct labor efficiency variance 直接人工效率差异 ...
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It is suitable for oil delivery in commercial, industrial and agricultural fields to improve working efficiency and relieve labor intensity.
它能提高工作效率，减轻劳动强度，因此，适合商业、工业、农业等行业作输油之用。
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