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  • The working principle of efficient vertical concrete surface retarder

    The working principle of efficient vertical concrete surface retarder

    The working principle of efficient vertical concrete surface retarder (1) Dispersion: After the cement is mixed with water, due to the hydration of the cement particles, the cement particles form an electric double-layer structure, which makes it form a ...
  • The Working Principle Of Deep Groove Ball Bearings

    The Working Principle Of Deep Groove Ball Bearings

    The W orking P rinciple O f D eep G roove B all B earings Working principle: Deep groove ball bearings mainly bear radial load, and can also bear radial load and axial load at the same time. When it only bears radial load, the contact angle is zero. ...
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