“fundamental units”的概念、定义、翻译、参考文献-科学参考

fundamental units

Physics

A set of independently defined units of measurement that forms the basis of a system of units. Such a set requires three mechanical units (usually of length, mass, and time) and, in some systems, one electrical unit; it has also been found convenient to treat certain other quantities as fundamental, even though they are not strictly independent. In the metric system the centimetre–gram–second (c.g.s.) system was replaced by the metre–kilogram–second (m.k.s.) system; the latter has now been adapted to provide the basis for SI units. In British Imperial units the foot–pound–second (f.p.s.) system was formerly used.

Chemistry

A set of independently defined units of measurement that forms the basis of a system of units. Such a set requires three mechanical units (usually of length, mass, and time) and one electrical unit; it has also been found convenient to treat certain other quantities as fundamental, even though they are not strictly independent. In the metric system the centimetre-gram-second (c.g.s.) system was replaced by the metre-kilogram-second (m.k.s.) system; the latter has now been adapted to provide the basis for SI units. In British Imperial units the foot-pound-second (f.p.s.) system was formerly used.

Chemical Engineering

An independent set of units of measurement that forms the basis of a basis of units. In the SI unit system (Système International d’Unités), there are seven fundamental units: kilogram, metre, second, kelvin, mole, ampere, and candela. Derived units are also acceptable in the SI system and include the units for pressure as newtons per square metre (Nm⁻²) with base units kgm⁻¹s⁻¹. The pascal (Pa) is also acceptable. In British Imperial units, the units are foot, pound, second. Many process instruments are still to be found with these units. See f.p.s. engineering units.

单词	fundamental units
释义	fundamental units Physics A set of independently defined units of measurement that forms the basis of a system of units. Such a set requires three mechanical units (usually of length, mass, and time) and, in some systems, one electrical unit; it has also been found convenient to treat certain other quantities as fundamental, even though they are not strictly independent. In the metric system the centimetre–gram–second (c.g.s.) system was replaced by the metre–kilogram–second (m.k.s.) system; the latter has now been adapted to provide the basis for SI units. In British Imperial units the foot–pound–second (f.p.s.) system was formerly used. Chemistry A set of independently defined units of measurement that forms the basis of a system of units. Such a set requires three mechanical units (usually of length, mass, and time) and one electrical unit; it has also been found convenient to treat certain other quantities as fundamental, even though they are not strictly independent. In the metric system the centimetre-gram-second (c.g.s.) system was replaced by the metre-kilogram-second (m.k.s.) system; the latter has now been adapted to provide the basis for SI units. In British Imperial units the foot-pound-second (f.p.s.) system was formerly used. Chemical Engineering An independent set of units of measurement that forms the basis of a basis of units. In the SI unit system (Système International d’Unités), there are seven fundamental units: kilogram, metre, second, kelvin, mole, ampere, and candela. Derived units are also acceptable in the SI system and include the units for pressure as newtons per square metre (Nm⁻²) with base units kgm⁻¹s⁻¹. The pascal (Pa) is also acceptable. In British Imperial units, the units are foot, pound, second. Many process instruments are still to be found with these units. See f.p.s. engineering units.
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