graded sand 中文意思是什麼

graded sand 解釋
分選砂
  • graded : 沖淤均衡的
  • sand : n 1 沙。2 〈 pl 〉 沙灘，沙洲，沙地，沙漠。3 〈 pl 〉 沙粒；（計時用的沙漏中的）細沙。4 光陰，時...
  1. Explanation : this is kind of sand which is washed. got rid of clay. graded and disposed sarface. and it. saiso molding and core sand used in casting iron and middlesmall sized casting stee

    水洗硅砂系列：這是一種經過洗滌、脫泥、分級和表面處理的砂，具有較清潔的原形顆粒，用於鑄鐵件，中小型鑄鋼件的型芯砂。
  2. Badly graded sand

    級配不良的砂
  3. 2 identify the soil as a poorly graded gravel, gp, or as a poorly graded, sand, sp, if it consists predominantly of one size ( uniformly graded ), or it has a wide range of sizes with some intermediate sizes obviously missing ( gap or skip graded )

    2如果土包含一個主要的粒徑（均勻的級配） ，或者有一個很寬的，一些中間粒徑明顯缺失的范圍（間隙或跳躍的級配）
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