Anh
random motion
random movement
variable motion
variable movement
Đức
ungleichfoermige Bewegung
Pháp
mouvement irrégulier
random motion,random movement,variable motion,variable movement /SCIENCE,ENG-MECHANICAL/
[DE] ungleichfoermige Bewegung
[EN] random motion; random movement; variable motion; variable movement
[FR] mouvement irrégulier