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刀片上作了实际考核，寿命大大提高。
，名；特别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刀片上作了实际考核，寿命大大提高。
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