floor sand strip ; floor sand ; back sand ; backing sand
... infrared a. 红外线（的） backing sand 背砂，填充砂 penetrate vt. 渗入 ...
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背风砂丘 lee dune
背磨砂膏 back scrub
背板衬砂造模法 back plate molding
砂色驼背石首鱼 grey weakfish
通知中心磨砂背景 add cool blurry NC background
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其次，进行了陶粒粉煤灰混凝土、粘性土、风积砂、砂砾和石灰土等几种材料的台背回填离心模型试验。
Secondly, models with different backfill-material such as argil fly-ash concrete, soil, sand, grit and lime-stabilized soil were experimented.
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