干砂是建筑装潢，小五金，各种装饰拉平等必备材料。
他正站在他挖的干砂洞旁，旁边还有一个巨大的用来盛水的锅。
He was standing by the pit he had dug in the dry sand, with a huge water pot beside it.
对干砂的抗剪强度进行了研究，认为型砂存在咬合强度。
The shear strength of dry sand has been studied, the result shows the interlocking strength existing interdry sands compacted.
消失模铸造工艺影响干砂紧实的主要因素是振动加速度和负压度。
The main factors influencing sand compaction on EPC are vibration acceleration and negative pressure.
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