国际单位制(法语:Système International d'Unités 符号:SI),源自公制或米制,旧称“万国公制”,是现时世界上最普遍采用的标准度量衡单位系统,采用十进制进位系统。是18世纪末科学家的努力,最早于法国大革命时期的1799年被法国作为度量衡...
网络释义 1. 国际单位制导出单位 什么意思_英语si... ... SI-units 国际单位SI derived units国际单位制导出单位SI base units 国际单位制基本单位 ... dict.youdao.com|基于 1 个网页 例句 释义: 全部,国际单位制导出单位 更多例句筛选 1. SIDerivedUnitswithSpecialNamesand Symbols ...
International System of Units ( SI ) SI Derived Units with Special NamesBasic, S IUnits, Supplementary
SI abbr.国际单位制 (International System of Units)units [简明英汉词典]n.单位 unless otherwise specified [简明英汉词典]除非另有说明 SI units 应该被 用作measurement(测量法, 度量, (量得的)尺寸, 度量单位制)制度system (系统, 体系, 制度, 体制, 秩序, 规律, 方法)...
Derived units are expressed as multiplications or divisions of fundamental units and may be named. Examples are the newton for force and the Hertz for frequency. These may be combined to derive further units. The SI system also derives prefixes for multiple and submultiples of SI units to ...
What are examples of derived units? Some examples of derived units are density, concentration, and volume. Since derived units are calculated buy combining multiple SI units using algebraic equations there are many more. What are SI Units? SI units, or the International System of Units, are the...
网络释义 1. 国际单位制基本单位 什么意思... ... SI derived units 国际单位制导出单位SI base units国际单位制基本单位SI basic units 国际单位制基本单位 ... dict.youdao.com|基于 1 个网页
and most technical purposes. There are seven fundamental units: the metre, kilogram, second, ampere, kelvin, candela, and mole; and two supplementary units: the radian and the steradian. All other units are derived by multiplication or division of these units without the use of numerical ...
目前,物理学家共发现了7个独立的基本物理量,并制定了国际单位制。 在国际单位制中,单位主要分成三类(基本单位、导出单位、辅助单位); 基本单位:在量纲上彼此独立; 辅助单位:目前只有两个,它们都是纯几何单位; 导出单位:数量很多,主要是由基本单位组合构成。
The International System of Units (SI) is supposed to be coherent. That is, when a combination of units is replaced by an equivalent unit, there is no additional numerical factor. Here we consider dimensionless units as defined in the SI, e.g. angular units like radians or steradians and...