Then their chemical compositions, microstructure and basic physical properties were tested. The basic physical properties include apparent porosity, bulk density, compression strength, setting expansion and thermal expansion.
材料与方法 本研究分为三部分：第一部分 国外磷酸盐结合石英质包埋料的组成、结构及基本物理性能对四种国外磷酸盐包埋料与相匹配的包埋液按特定的粉液比制备成型，分别检测化学组成、显微结构及基本物理性能(显气孔率、体积密度、耐压强度、凝固膨胀、热膨胀)。
参考来源 - 磷酸盐结合石英质包埋料的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Points out problems in setting expansion joints for supply and return water risers.
指出了在供回水立管中间设置伸缩节存在的问题。
Adopting tiny extended concrete to build the excessive regulation length basement without setting expansion joint for temperature is an economical and efficient design.
故超长地下室采用微膨胀混凝土浇筑而不设温度伸缩缝是一种经济、有效的措施。
Expansion joints due to large aluminum alloy temperature deformation, to make the curtain wall has enough deformation servo, curtain wall pillar setting expansion joint.
伸缩缝由于铝合金温度变形较大，为使幕墙有足够的变形随动性，幕墙立柱需设置伸缩缝。
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