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。

《柯林斯英汉双解大词典》

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。

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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。

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West Berkshire Council - which has been mixing its salt with sand grit to try and extend supplies - sent trucks to Cheshire on Thursday to pick up salt supplies after deliveries failed to arrive.

BBC: Cat litter used to combat snow as salt supplies drop

Conditions at the desert circuit can be pretty interesting with gusts of winds often blowing sand and grit onto the circuit.

BBC: LATEST NEWS (all times BST)

He also said the government should consider mixing salt with grit or sand to make it go further, providing supplies to towns and villages so communities could "help themselves".

BBC: Groups name big freeze priorities ahead of Cobra talks