"Btu{th}/(lb\u22C5\u00B0F)" . . . . . "unit of the thermal conductivity according to the Imperial system of units divided by the units pound and degree Fahrenheit" . "British Thermal Unit (thermochemical) Per Pound Degree Fahrenheit"@en . "[Btu_th].[lb_av]-1.[degF]-1"^^ . "426.654"^^ . "[Btu_th]/([lb_av].[degF])"^^ . "J50" . "unit of the thermal conductivity according to the Imperial system of units divided by the units pound and degree Fahrenheit"^^ . "0112/2///62720#UAA127" . . .