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词汇 Base units
分类 英语词汇 英语翻译词典
释义

Base units

原声例句
专升本阅读真题

In the UK, the yard was considered the base unit of length.

在英国，码被认为是基本的长度单位。

化学 Crash Course

Interestingly, one of the standard base units is derived from an actual value though not a universal one.

有趣的是，其中一个标准基本单位源自实际值， 但不是通用值。

PBS趣味科普

So, in 2019, the base units that make up the foundation of the metric or SI system were redefined to no longer rely on imperfect human artifacts.

因此，在 2019 年，构成公制或 SI 系统基础的基本单位被重新定义为不再依赖不完美的人类工件。

化学 Crash Course

For example, did you know that the International System of Units only includes seven base units and every other unit is derived from those units?

例如，您是否知道国际单位制仅包含七个基本单位， 而其他所有单位均源自这些单位？

中文百科

国际单位制基本单位 SI base unit

（重定向自Base units）

国际单位制基本单位是一系列由物理学家订定的基本标准单位。国际单位制共有七个基本单位。其中，只有公斤是用实物来定义。

中华人民共和国用的单位名称依据《中华人民共和国法定计量单位》。****用的单位名称依据****公告的《法定度量衡单位及其使用之倍数、分数之名称、定义及代号》。

1. 所含基本微粒个数与0.012公斤碳-12中所含原子个数相等的一系统物质的量定义为1莫耳
2. 使用摩尔时，应指明基本微粒，可以是分子、原子、离子、电子或其他基本微粒，也可以是基本微粒的特定组合体。

英语百科

SI base unit 国际单位制基本单位

（重定向自Base units）
The seven SI base units and the interdependency of their definitions: for example, to extract the definition of the metre from the speed of light, the definition of the second must be known while the ampere and candela are both dependent on the definition of energy which in turn is defined in terms of length, mass and time.
Proposed SI System: Dependence of base unit definitions on physical constants with fixed values and on other base units that are derived from the same set of constants.

The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units are derived. The SI base units and their physical quantities are:

The SI base quantities form a set of mutually independent dimensions as required by dimensional analysis commonly employed in science and technology. However, in a given realization in these units they may well be interdependent, i.e. defined in terms of each other.
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