The ore be heated in a furnace, then pounded with heavy hammer.
铁矿石在炉石加热, 然后用重锤敲打.
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He hurt hand with a heavy hammer.
他用锤子砸伤了手.
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Ring hammer hammer ( heavy hammer breaking machine ) suitable hardness and brittleness's category below the broken material.
环锤式碎石机 ( 重型锤破机 ) 适用于莫氏硬度五级以下的脆性物料的破碎.
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