"physicochemical treatment"@en . . . "traitement physicochimique"@fr . "traitement chimique"@fr . "physical processing"@en . . "" . "" . . . . "physical treatment"@en . . . "transformation physique"@fr . "STEP" . "chemical treatment"@en . . . "An operation or set of operations that consists of the transformation of materials through mechanical, thermal, or other physical means."@en . . ""@es . "validated" . ""@it . ""@de . .