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单词 Kelvin absolute temperature scale
释义

Kelvin absolute temperature scale

英语百科

Kelvin

Lord Kelvin, the namesake of the unit
A thermometer calibrated in degrees Celsius (left) and kelvins (right).

The kelvin is a unit of measure for temperature based upon an absolute scale. It is one of the seven base units in the International System of Units (SI) and is assigned the unit symbol K. The Kelvin scale is an absolute, thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics. The kelvin is defined as the fraction 273.16 of the thermodynamic temperature of the triple point of water (exactly 0.01 °C or 32.018 °F). In other words, it is defined such that the triple point of water is exactly 273.16 K.

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更新时间:2025/6/21 10:15:50