In the US, pellet mills across the country receive, sort, grind, dry, compress, and bag wood and other biomass waste products into a conveniently handled fuel.

在美国，全国各地的颗粒厂回收、分类、粉碎、干燥、压缩、包装木材和其他废弃生物质，使其变成方便处理的燃料。

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Through adding low viscidity Hydroxypropyl Methyl Cellulose, workable performance of the dry mix can be most improved, but compress strength reduce.

通过掺入低粘度的羟丙基甲基纤维素后，砂浆的施工和易性能得到了极大的改善，但强度有所降低。

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Compared with the dry-grinding, the surface compress residual stresses of the hardened layer under wet-grinding is increased, but its depth of hardened layer reduces about 30%.

与干磨相比，湿磨硬化层表面残余压应力有所提高，但其硬化层深度减少了约30%。

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