Electromagnetic forming was applied to the powder material compaction, and PZT powder was compacted with low-voltage electromagnetic compaction.
将电磁成形技术用于粉末材料致密度研究中，以PZT粉末为研究对象，对其进行低电压电磁压制成形。
According to the former solution of spherical or columnar hole about material strain-softening model, the model for grout bulb expansion is formed in compaction grouting.
根据他人已有的关于材料应变软化模型的球(柱)形孔扩张问题的解，建立了压密灌浆中的浆泡扩张模型。
In rainy days, it is not suitable to carry on the spreading and compaction of filling material.
雨天不宜进行填料的摊铺和压实作业。
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