长度单位换算Length Unit Conversion
Length inch foot millimeter centimeter meter		inches feet millimeters centimeters meter

温度换算Temperature Conversions
Temperature °C °F  K		°C °F  K

功率单位换算Power Unit Conversion
Power W kW BTU/hr Joule/sec Horsepower		Watts Kilowatts BTU/hr Joule/sec Horsepower

压力单位划算Pressure Unit Conversion
Pressure Pascal PSI in H2O in Hg mm Hg		Pascal PSI in H2O in Hg mm Hg (Torr)