Apparatus wherein the removal or cleaning of sand, mud, or silt is effected by the action of high-pressure air or water which is forced through a projecting part with an opening in a localized stream.
(the removal or cleaning of sand, mud, or silt; is effected; by the action of high-pressure air or water; L:Apparatus) (high-pressure air or water; is forced; through a projecting part)
the removal or cleaning of sand, mud, or silt high-pressure air or water
is effected is forced
by the action of high-pressure air or water L:Apparatus
through a projecting part