sand-cement mortar 基本例句 水泥砂浆 This paper discussed the efficient method to use rejected cement mortar.摘要探讨利用废弃水泥砂浆的有效再生利用途径。 The enhanced mechanism of PP fiber and polymer emulsion on cement mortar properties was explored.对聚丙烯纤维和聚合物乳液改性水泥砂浆的机理进行了初步讨论。