| Burn-On-Sand | (english) Sand adhering to the surface of the casting that is extremely difficult to remove. |
| Burnishing 2 | (english) Smoothing surfaces through friction between the material and material such as hardened metal media. |
| Burnt Rubber | (english) Small or large black spots that generally show up on surface and are generally caused by pickling steel too hot. |
| Concentrated force: | (english) A force considered to act along a single line in space. Concentrated forces are useful mathematical idealizations, but cannot be found in the real world, where all forces are either body forces acting over a volume or surface forces acting over an area. |
| Distributed load: | (english) An external force which acts over a region of length, surface, or area: essentially any external force which is not a concentrated force. |
| External force: | (english) A surface force or body force acting on an object. External forces are sometimes called applied forces. |
| Gravity: | (english) An attractive force between two objects; each object accelerates at a rate equal to the attractive force divided by the object's mass. Objects near the surface of the earth tend to accelerate toward the earth's center at a rate of ; this value is often called the gravitational constant and denoted as g. |
| Pressure: | (english) Pressure is a similar idea to stress, the force intensity at a point, except that pressure means something acting on the surface of an object rather than within the material of the object. When discussing the pressure within a fluid, the meaning is equivalent to stress. |
| Surface force: | (english) A force applied to the surface of an object. |
| Adsorption | (Environmental Engineering) A surface phenomena in which a solute (soluble material) concentrates or collects at a surface (the adsorbent). |