| traction |
A body's friction on a surface such as a vehicle tire on a roadway.
출처: www2.newton.mec.edu/~mike_sylvia/DRAGSTERS/glossar...
|
|---|---|
| traction |
This is when the force of the water simply rolls large rocks along the riverbed. The river usually only has this much force in times of flood.
출처: www.swgfl.org.uk/riversa/WaterWheel.htm
|