He felt tiny pieces of grit and sand peppering his knees.
他感到细小的沙砾正打在他的膝盖上。
If the substrate is metal, I sand blast it when possible or use 80 grit emery paper as a second choice.
如果基板是金属，如可能我就喷砂或者，作为第二选择80粒度的金刚砂纸。
Secondly, models with different backfill-material such as argil fly-ash concrete, soil, sand, grit and lime-stabilized soil were experimented.
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。
The land spit and lake terrace are formed by the sand and grit which have good polish and select.
上述阶地、沙嘴和湖岸堤的沉积物主要由磨圆度和分选性较好的砂或砂砾石组成。
Before shop primer is applied, dust, sand residue, crushed steel shot or grit and all other contaminants must be removed from the surface using a vacuum cleaner, air blower, etc.
当车间底漆涂装之前，应用真空清洁器、鼓风装置除去表面的灰尘、残砂、碎钢粒以及其他污染物。
Then using 80 grit sand down the excess until you can see the seam only.
然后使用80砂砂下跌过剩，直到你可以看到煤层只。
I taped 80 grit sand paper to the hull to get the right contour for the tower.
i录音80沙砾砂纸向船体，以得到正确的轮廓，为塔。
Lightly scuff sand flywheel face with 180 grit emery clothed clean surface with a wax and grease remover.
以180号金刚砂布轻轻打磨飞轮表面。然后以除去蜡与黄油的去污剂清洗表面。
Lightly scuff sand flywheel face with 180 grit emery clothed clean surface with a wax and grease remover.
以180号金刚砂布轻轻打磨飞轮表面。然后以除去蜡与黄油的去污剂清洗表面。
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