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Invention of a forging hammer helped a lot.
锻造锤的发明让他们省力不少。
youdao
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The hammer is applied in different kinds of free forging in the forging shop.
本锤适用于锻工车间对各种形状零件的自由锻造。
youdao
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The hammer is applied in different kinds of free forging in the forging shop.
本锤适用于锻工车间对各种形状零件的自由锻造。
youdao