(1) Isospin is a vector quantity.

(2) Angular momentum is an axial vector quantity.

(3) A vector quantity is an entity with a magnitude and a direction in space.

(4) Average velocity is a vector quantity, in the same direction as the vector ? ? s.

(5) A vector quantity is one whose direction as well as its magnitude is significant.

(6) This method is to control the stator current as a vector quantity on the basis of slip frequency control.

(7) It is well known that sound wave has both scalar quantity field and vector quantity field.