Missed a good metallographic sandpaper due to bias
Prejudice is the wrong judgment made without careful understanding, as experienced by the editor& Flash; Due to bias, missing a good metallographic sandpaper resulted in a failure to improve work efficiency and quality in a timely and effective manner. For a long time, the editor's laboratory has been using ordinary metallographic sandpaper to grind samples. The senior master taught me this, and the editor followed suit. Although the master retired for more than two years, the editor still&
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