The practical investigation on the razor blade of scissors of steel plate was conducted and it's life was improved notablely.
并且
的剪切机刀片上作了实际考核，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.
并且的剪切机刀片上作了实际考核，寿命大大提高。
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