sand paper

砂纸

1. 砂纸：其实不用换新的sensor,把它拿出来用磨砂纸(sand paper)磨一下表面,使之重新光滑并让电流顺利通过就好了. 换新的应该要花钱,其实没必要. 这种情况很常见. sensor外面氧化或者生锈都有可能,当火焰触及sensor,会产生一股电流作为信号,

2. 砂纸型打粗机：后帮机 heel seat | 砂纸型打粗机 sand paper | 砂轮式打粗 stone roughing

3. 沙纸：sand bag 沙囊,沙袋 | sand paper 沙纸 | sand paper strip 沙纸磨带

4. 砂纸,磨光纸：sand cast 砂型铸造 | sand paper 砂纸,磨光纸 | sand paper finish 砂纸打光

1. Those storms could be a major source of the sand en route to Beijing, the paper said.

2. Then the lacquered wood is polished with sand paper for the next process of varnishing.