英语翻译1. why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?2. How should ones process the conductor made of copper wire a
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![英语翻译1. why does the metal with finer grains have not only higher strength and hardness but also higher plasticity and toughness than those of coarse grains at room temperature?2. How should ones process the conductor made of copper wire a](/uploads/image/z/11669783-23-3.jpg?t=%E8%8B%B1%E8%AF%AD%E7%BF%BB%E8%AF%911%EF%BC%8E+why+does+the+metal+with+finer+grains+have+not+only+higher+strength+and+hardness+but+also+higher+plasticity+and+toughness+than+those+of+coarse+grains+at+room+temperature%3F2%EF%BC%8E+How+should+ones+process+the+conductor+made+of+copper+wire+a)
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