"冲砂"是个多义词，它可以指冲砂（旅游运动项目）,冲砂（石油工业工艺）。
冲砂后螺旋桨表面会有很多的灰尘和磨料的残留。
There will be a lot of dust and abrasive residueon the surface of the propeller after sand washing.
因此，研究采用保护油层封隔器冲砂技术，来解决这一问题。
Therefore, reservoir protection packer sand washing technique is adopted to solve this problem.
分析了锡青铜叶轮铸件出现的缩孔、 气孔、冲砂等缺陷的原因。
The reasons resulting in the shrinkage porosity, gas-hole and impacted sand in bronze castings were analyzed.
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