The practical investigation on the razor blade of scissors of steel plate was conducted and it's life was improved notablely.
并且在钢板的剪切机
作了实际考
，寿命大大提高。
The practical investigation on the razor blade of scissors of steel plate was conducted and it's life was improved notablely.
并且在钢板的剪切机作了实际考，寿命大大提高。
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