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单词 SI Units
释义

SI Units

原声例句
可汗学院Khan Academy Middle school physics - NGSS初中物理

SI units are the International System.

SI 单位是国际单位制。

可汗学院Khan Academy Middle school physics - NGSS初中物理

To avoid any confusion, in science we use what are called SI units.

为了避免任何混淆,在科学中我们使用所谓的 SI 单位。

Veritasium真理元素

It is the only thing in the entire universe with a mass of exactly one kilogram because it IS the kilogram. It is also the only SI unit that is still defined by a physical object.

这是全宇宙中唯一一个质量为一公斤整的物质,因为它就是“一公斤”。 公斤同时也是唯一一个用一个指定物质定义的国际主单位。

中文百科

国际单位制 International System of Units

(重定向自SI Units)
磅秤
新国际单位制中,七个基础单位(图中有颜色的圆圈)和七个有定义值的基础常数(图中灰色圆圈)之间的关系

国际单位制(符号:SI,来自法语:Système International d'Unités),源自公制米制,旧称万国公制,是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单位。国际单位制是在公制基础上发展起来的单位制,于1960年第十一届国际计量大会通过,推荐各国采用,其国际缩写为SI

英语百科

International System of Units 国际单位制

(重定向自SI Units)
The seven base units in the International System of Units
Stone marking the Austro-Hungarian/Italian border at Pontebba displaying myriametres, a unit of 10 km used in Central Europe in the 19th century (but since deprecated).[2][3]
Carl Friedrich Gauss
ThomsonMaxwellWilliam Thomson (Lord Kelvin) and James Clerk Maxwell played a prominent role in the development of the principle of coherence and in the naming of many units of measure.[11][12][13][14][15]

The International System of Units (French:Système international d'unités, SI) is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units. It defines twenty-two named units, and includes many more unnamed coherent derived units. The system also establishes a set of twenty prefixes to the unit names and unit symbols that may be used when specifying multiples and fractions of the units.

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