What are the units of length? What are the units of length

Commonly used units are millimeters (mm), centimeters (cm), decimeters (dm), kilometers (km), meters (m), microns (m), nanometers (nm) and so on.

The length unit adopted in China is consistent with the International System of Units, that is, "meter" is used as the legal unit of length measurement in China.

In the International System of Units, the standard unit of length is the meter, which is denoted by the symbol "m". The "meter" (metre), the unit of length of the International System of Units, originated in France. In May 1790, a special committee of French scientists recommended that the length of the earth's meridian passing through Paris be 1/40 millionth of the length of the meter, which was approved by the French parliament in 1791.

In 1792 1799, measurements were made from Dunkirk, France, to Barcelona, Spain, under the leadership of French astronomers Jerion Bull and Mishen.

In 1799, a platinum metre bar with a short section of 25 mm was made according to the measurement results, and the distance between the two ends of the pole was set at 1 meter, and it was handed over to the French archives for safekeeping, so it is also called "archive meter". This is the earliest definition of a meter.

In addition, the traditional Chinese length units include li, zhang, ruler, inch, xun, qi, fu, yi, step, step, chang, arrow, feast, several, rail, pheasant, milli, centi, minute, etc.

Length units: millimeters (mm), centimeters (cm), decimeters (dm), kilometers (km), meters (m), microns (m), nanometers (nm).

1. Millimeters. The millimeter, also known as the metric mile (or gong), is a unit of length and rainfall, the English abbreviation millimeter is equivalent to 1 centimeter, 100 millimeters is equivalent to 1 decimeter, and 1000 millimeters is equivalent to 1 meter (this is the literal meaning of milli).

Second, centimeters. A centimeter is a unit of measurement for length that is equal to one hundredth of a meter. The unit of length, abbreviated as cm, 1 cm = 1 100 meters. 1cm (cm) = 10mm (mm) = dm) = m).

3. Decimeters. The decimeter (English name decimetre decimeter, dm) is one of the metric units of length, and 1 decimeter is equivalent to 1/tenth of 1 meter. One decimeter is equal to ten centimeters, one decimeter is equal to one hundred millimeters, and one meter is equal to ten centimeters.

4. Kilometers. A kilometer is a unit of length, commonly known as a kilometer, and is expressed in km (kilometre) in English. In May 1790, a special committee of French scientists recommended that one 40 millionth of the length of the meridian of the earth passing through Paris be used as the unit of length - the meter.

1 km = 1,000 m = 10,000 decimeters = 100,000 cm.

Five, rice. metre, the SI system of units basic unit of length, symbolized m. It can be used to measure length, width, and height. Since 1983, the length of a meter has been defined as "the distance traveled by light in a vacuum in 1 299 792 458 seconds".

The definition of "m" originated in France. The length of 1 meter was originally defined as one ten-thousandth of the distance from the Earth's equator to the North Pole on the meridian through Paris, and was subsequently identified with the International Meter Prototype. With the deepening of people's understanding of metrology, the definition of the length of the meter has been revised several times.

China's traditional length units include the city, the city, the city, the city, the city, the city, etc.

In the International System of Units: light years, petameters (pm), megameters (mm), kilometers (km), decimeters (dm), centimeters (cm), millimeters (mm), silk meters (dmm), flickering meters (cmm), micrometers (m), nanometers (nm), picometers (pm), femtometers (fm), ami (am), etc.

The units of length used in the United Kingdom and the United States are: miles, yards, feet, inches, etc.

The meter, the micron, the millimeter, the centimeter, the decimeter, the meter, the kilometer.

Mathematics is commonly used in millimeters, centimeters, decimeters, meters, and kilometers. Friend, I don't know which one you want to ask!

centimeters, meters, kilometers, city inches, city feet, city miles, inches, feet, yards, miles.

The units of length are: nanometer, micrometer, millimeter, centimeter, decimeter, meter, kilometer.

Mathematics is commonly used in millimeters, centimeters, decimeters, meters, and kilometers.

The units of length are: light years (ly), kilometers (km), meters (m), millimeters (mm), centimeters (cm), decimeters (dm), micrometers (um), nanometers (nm), picometers (pm), and millimeters (ym).

One light year = 9460730472580 km 1 km = 1000 m 1 m = 10 decim 1 cm = 10 mm.

What is a unit smaller than a millimeter, and what are the relationships between units of length,

Kilometers, meters, decimeters, centimeters, millimeters, microns, nanometers.

The units of length are millimeters, centimeters, decimeters, kilometers, meters, microns, and nanometers. The SI unit of length is "meter", and the symbol is "m", and there are cities, zhangs, rulers, inches, and minutes. The units of length used in the United Kingdom and the United States generally are:

Miles, yards, feet, inches, etc.

The most common units of length are kilometers (km), meters (m), decimeters (dm), centimeters (cm), and millimeters (mm), and the conversion relationship between them is:

1 kilometer (km) = 1000 meters (m), 1 meter (m) = 10 decimeters (dm).

1 kilometer (km) = 1000 meters (m) = 10000 decimeters (dm) = 1000 00 centimeters (cm) = 1000 000 millimeters (mm).

1 meter (m) = 10 decimeters (dm) = 100 centimeters (cm) = 1000 millimeters (mm).

1 decimeter (dm) = 10 centimeters (cm) = 100 millimeters (mm).

1 centimeter (cm) = 10 millimeters (mm).

Common units of length are millimeters, centimeters, decimeters, kilometers, meters, microns, and nanometers.

The SI unit of length is "meter", and the symbol is "m".

The units of length used in the United Kingdom and the United States generally are: miles, yards, feet, inches, etc.

The length units of the answer are: 1. Common length units: kilometers, decimeters, centimeters, millimeters, microns, nanometers, picometers, and femtometers. 2. Astronomical length units: light year, parsec, astronomical unit, lunar distance, earth diameter, terameter, light minute, light second, Beijing meter.

Do you remember what units of length you learned in elementary school? Can you name these units of length exactly?

Units of lengthThe unit of length refers to the basic unit of measuring the distance in space, and it is the basic unit formulated by human beings in order to standardize the length. Its international unit is the meter (symbol m), and the commonly used units are millimeters (mm), centimeters (cm), decimeters (dm), kilometers (km), meters (m), micrometers (m), nanometers (nm) and so on. Units of length play an important role in various fields.

A common unit of lengthkilometers, decimeters, centimeters, millimeters, micrometers, nanometers, picometers, femtometers.

A unit of astronomical lengthLight years, parsecs, astronomical units, moon distances, earth diameters, terameters, light fractions, light seconds, Beijing meters.

Special length unitsEggstrand, Planck length, silk meter, humi, femtomi, ami, thousand meters, unit meters.