dewalt power tools.这个的中文翻译是什么?

dewalt power tools.这个的中文翻译是什么? power tools rather than having to use muscle power power power power power power power power power power power power power tools是什么意思 It is not what the tools that a scientist uses but how he uses these tools that makes him a scientist?这句话如何翻译? 英语翻译tool failure and tool lifeAs a consequence of continued use ,cuting tools fail to perform satisfactorily .unsatisfactory performance may involve loss of dimensional accuracy ,excessive surface roughness,increased power requirements,physic knowledge is power这句话是谁说的?