VectorPlot3D
VectorPlot3D[{vx,vy,vz},{x,xmin,xmax},{y,ymin,ymax},{z,zmin,zmax}] generates a 3D vector plot of the vector field {vx,vy,vz} as a function of x, y, and z.
VectorPlot3D[{field1,field2,…},{x,xmin,xmax},{y,ymin,ymax},{z,zmin,zmax}] plots several vector fields.
VectorPlot3D[…,{x,y,z}∈reg] takes the variables {x,y,z} to be in the geometric region reg.
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