black stains in the surface
A certain depth beneath the surface of the ground
amount of salt in surface drainage water and irrig
application on the surface
applicotion on the surface of grain bulk
average voice level of a grade in surface
breaking of pitch surface in early stage
characteristic of the surface
Chiral grafting on the surface
cobalt coated on the surface
colouring on the surface
Continuous reaction on the surface of solid
DEM on the surface of ellipsoid surface
dislocation near the surface
floating on the surface
flow-up of grout to the surface