. "psi/psi" . "Psi Per Psi"@en . . . . "composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)" . "L52" . . "[psi].[psi]-1"^^ . "1"^^ . "composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)"^^ . . "0112/2///62720#UAA951" .