collision between continental plates
Collision Between Movable and Stationary Parts
collision between neutrons
collision between rotational and quiet part
collision between Schnoman flying crank shear and steel plate
collision between ship and bridge
collision between ship-bridge
collision between ships
Collision between Sister-ships
collision between the continents
collision between vehicle and pedestrian
collusion between businessmen and politicians
attraction between particles
distance between particles
space between particles
Stress between particles
distance between centres of lines；distance between centers of tracks；midway between tracks
arc-continent collision or post-collision