Sources of arm pain are numerous, affecting the muscles, tendons, ligaments, and bones of the arm, shoulder, elbow, wrist, hand, and fingers. If youâre experiencing a strange pain, tenderness, or numbness in your arm, and you donât know why, consider the following 10 common causes of arm painâ¦. ADVERTISEMENT.
abrasion. n. 1. the process of scraping or wearing down by friction. 2. a scraped area or spot; graze. 3. (Physical Geography) geography the effect of mechanical erosion of rock, esp a river bed, by rock fragments scratching and scraping it; wearing down. Compare attrition 4, corrasion.
Abrasive liquids. An abrasive liquid contains substances, often minerals or inorganic substances, that are harder than the material they rub against. This abrasion will wear out and damage softer materials. An abrasive liquid contains substances, often minerals or inorganic substances, that are harder than the material they rub against. This abrasion will wear out and damage softer materials. Naturally occurring abrasives found in wastewater could be sand, stones, calcium carbonate or ferric oxide.