Preparation, formula and properties testing were introduced for HMS series high range water reducing agent.

介绍了HMS型系列高效减水剂的制备方法 、 配方、以及性能测试.

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The millimeter wave ( MMW ) Inter - pulse stepped frequency radar is a type of wide band high - range - resolution radar.

毫米波脉冲频率步进雷达是一种宽带高距离分辨率雷达.

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