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