SI基本单位又称国际单位制，后者的英语是International System of Units(单位的国际体系)。International System of Units应该缩写为ISU吧？怎么会SI呢？如果你去查www.thefreedictionary的缩写(acronyms)词典, 对SI确实有一条释义是 International System of Units
TABLE D.1 SI UnitsSI Base UnitBase Quantity Name SymbolLength Meter mMass Kilogram kgTime Second sElectric current Ampere ATemperature Kelvin KAmount of substance Mole molLuminous intensity Candela cdTABLE D.2 Some Derived SI UnitsExpression in Expression inTerms of Base Terms of OtherQuantity Nam...
International system of unitsThermodynamic temperatureElectric currentLuminous intensitySurface densityKeywords: International system of units; Thermodynamic temperature; Electric current; Luminous intensity; Surface densitydoi:10.1002/9781119403647.ch304James G. Speight...
电流(Current) I A 温度(Temperature) theta K 物质量 (Amount of Substance) N mol 发光强度(Luminous intensity) J cd 这套单位标准是1960年称为国际统一共识。 更改原因 所以他们为啥需要费那么大劲去改变原有的定义呢? 以质量为例,1 kg的砝码被称作国际公斤原器 (The International Prototype of the Kilogr...
Name Expression in terms of other units Expression in terms of SI base units Hz1/s s−1 rad m/m dimensionless sr m2/m2dimensionless N, kg·m/s2kg·m·s−2 Pa, N/m2kg·m−1·s−2 J, , N·m = C·V = W·s kg·m2·s−2 W, J/s = V·A kg·m2·s−3 C or...
SI unit 美[ˌes ˈaɪ ˌjunɪt] 英[ˌes ˈaɪ ˌjuːnɪt] un.国际制单位;SI单位 网络公制单位;国际单位;国际单位制单位 复数:SI units 英英 网络释义 n. 1. SystèmeInternationalunit:astandardscientificunitofmeasurementinaninternationalsystem.Themainunitsarethemeter,kilogram,second...
TABLE D.1 SI UnitsSI Base UnitBase Quantity Name SymbolLength Meter mMass Kilogram kgTime Second sElectric current Ampere ATemperature Kelvin KAmount of substance Mole molLuminous intensity Candela cdTABLE D.2 Some Derived SI UnitsExpression in Expression inTerms of Base Terms of OtherQuantity Name...
If the room temperature is 35∘C, then calculate the coefficient to performance. Calculate the amount of heat rejected to the surrounding. View Solution Show that the SI units of thermal conductivity are W//m-K . View Solution Mention the SI unit of thermal capacity of a substance. View...
What is the SI unit for temperature? What are units of frequency? What is the SI unit for speed? What SI units are used to measure volume? What does SI units mean? What is the SI unit of food energy? What is the kilometer an SI unit of?
Kelvin (K).Unit of thermodynamic Temperature. The value of the Kelvin is now based on the Boltzmann constant, which is 1.380649 × 10-23J/K-1. Prior to 2018, a Kelvin was considered equal to 1/273.16 (3.6609 x 10-3) of the thermodynamic temperature of the triple point of pure water...