简短的答案是涡轮压缩机'机械优势'。
The short answer to this is turbine to compressor 'Mechanical advantage'.
精心的设计实现了最大的机械优势，同时因为工具的重量轻，操作人员的疲劳也降到最低程度。
The carefully engineered design achieves the absolute maximum mechanical advantage; along with the tool's light weight, operator fatigue is minimized.
拖拉机、普通收割机、联合收割机，以及上百种其他不同的机器让农民获得了他们需求已久的机械优势，来减轻他们的负担并使他们的土地真正赢利。
The tractor, the reaper, the combine, and hundreds of other machines gave farmers the mechanical advantage they had long needed to ease their burdens and make their lands truly profitable.
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