What is Legal Metrology? What is the current legal unit of measurement in our country?

Splash screen generally refers to the display problem on the computer monitor, during the operation of the computer, the screen screen flickering or irregular flashing, sometimes horizontal lines and vertical lines. The splash screen and the snowflake screen are mainly caused by the problem of the graphics card,The snowflake screen is similar to the snowflake screen of the TV,The splash screen is like a problem with the graphics card driver,The picture is complete,But the eyes are extremely uncomfortable。 Therefore, the graphics card should be overhauled first, but problems with the display itself are not ruled out.

Hope it helps.

"Legal measurement" means the unit of measurement published by *** as stipulated in the Metrology Law. The legal units of measurement in China include: the International System of Units (SI) units of measurement and other units of measurement selected by the state.

Legal metrology has a special legal metrology verification agency, legal metrology verification agency is a measurement technical institution set up or authorized by the measurement administrative department in accordance with the law, is to ensure the unity of China's measurement unit system and the accuracy and reliability of the value, for the measurement administrative department to implement measurement supervision in accordance with the law to provide technical guarantee for the technical institutions.

The legal unit of measurement is mandatory and must be followed by all industries and organizations to ensure the consistency of the unit. China's legal unit of measurement is based on the International System of Units (SI) and uses a few units of measurement from other systems of units to compose.

The definition and use of statutory units shall be separately stipulated by the State Bureau of Metrology. The current legal units of measurement in our country include:

1) the basic unit of the International System of Units;

2) auxiliary units of the International System of Units;

(3) the deriving unit with a special name in the International System of Units;

4) nationally selected non-SI units;

5) Units in the form of a combination of the above units;

6) decimal multiples and fractional units composed of prefixes and above units;

The definition and use of statutory units shall be separately stipulated by the State Bureau of Metrology.

The basic units of the International System of Units (SI) are defined as:

Meters (m) is the length of light traveled in a vacuum at a time interval of 1 299792458s.

The kilogram (kg) is a unit of mass that is equal to the mass of the international kilogram prototype.

According to the International System of Units (SI), the seven units of fundamental quantities are:

Length – meter

Mass – kilograms

Time – second

Temperature – Kelvin

Electric current – ampere

Luminous intensity – Candela

The amount of matter – moles (mol).

The corresponding codes are: m, kg, s, k, a, cd, mol

Auxiliary units. In the International System of Units, the unit of plane angles, the units of radians and solid angles, the spherical degree, is not classified as a base unit or derived unit, but is called an auxiliary unit. Secondary units can be used both as base units and as derived units.

They are defined as follows:

rad is the size of the plane angle between two radii in a circle when the arc length and radius of the circumference are equal to them.

Sphericity (SR) is a solid angle whose vertices are at the center of the sphere, and the area it intercepts on the sphere is equal to the area of the square with the radius of the sphere as the side.

China's legal units of measurement include: the basic units of the International System of Units; auxiliary units of the International System of Units; Deriving units with a special name in the International System of Units; nationally selected non-SI units; Units in the form of a combination of the above units; Decimal multiples and fractional units consisting of the prefix and above.

Article 3 of the Metrology Law of the People's Republic of China The State implements the legal unit of measurement system. The International System of Units (SI) units of measurement and other nationally selected units of measurement are national legal units of measurement. The name of the national legal unit of measurement is published by ***.

Due to special needs, the management measures for the use of non-statutory units of measurement shall be formulated separately by the administrative department of measurement.

China's legal units of measurement include: 1. The basic unit of the International System of Units; 2) auxiliary units of the International System of Units; (3) the deriving unit with a special name in the International System of Units; 4. Non-SI units selected by the state; 5) Units in the form of a combination of the above units; 6) decimal multiples and fractional units composed of prefixes and above units;

Metrology Law of the People's Republic of China

Article 3. The State implements a legal unit of measurement system.

The SI unit of measurement and other units of measurement selected by the State, in the case of segments, are the national legal units of measurement. The name and symbol of the national legal unit of measurement shall be published by ***.

Due to special needs, the management measures for the use of non-statutory units of measurement shall be formulated separately by the administrative department of measurement and measurement.

The legal measurement units are: the basic units of the SI system, the auxiliary merger units of the SI system, the derived units with special names in the SI system, the non-SI units selected by the state, the units of the combination of the above units, the decimal multiples and fractional units composed of the prefix and the above units.

The legal unit of measurement is mandatory, and all industries and organizations must comply with it to ensure the consistency of the unit.

China's legal units of measurement are based on the International System of Units and are composed of a few units of measurement from other systems of units.

Statutory refers to the provisions of laws and decrees, such as: quorum, legal unit of measurement, in accordance with legal procedures, etc.

Meter (m): A unit of length, 1m is defined as "the distance traveled by light in a vacuum in 1 299792458s". Kilogram (kg):

A unit of mass, 1 kg is defined as "a unit of mass when Planck's constant is minus 34 j·s". Second(s): A unit of time, 1s is defined as "the duration of 9192631770 cycles of radiation corresponding to the transition between two hyperfine energy levels in the ground state of the cesium-133 atom".

1. Meter (m): A unit of length, 1m is defined as "the distance traveled by light in a vacuum in 1 299792458s".

2. Kilogram (kg): a unit of mass, 1kg is defined as "the unit of mass when Planck's constant is minus 34 j·s".

3. Second(s): The unit of time, 1s is defined as "the duration of the transition between the two hyperfine energy levels of the ground state of the cesium-133 atom corresponding to the 9192631770 cycles of radiation".

4. Ampere (a): The unit of current, 1a is defined as "the intensity of the current generated by the movement of 1 charge in 1s".

5. Kelvin (k): a unit of thermodynamic temperature, 1k is defined as "the thermodynamic temperature corresponding to the Boltzmann constant".

6. Mole (mol): The unit of quantity of matter, 1mol is defined as "the amount of matter defined as "the amount of matter in a system that precisely contains 23 basic units such as atoms or molecules".

The Metrology Law of the People's Republic of China is a law formulated to strengthen the supervision and management of measurement, ensure the unification of the national unit of measurement system and the accuracy and reliability of the bending value of measurement, which is conducive to the development of production, science and technology, to meet the needs of socialist modernization, and to safeguard the interests of the country and the people.

Adopted at the 12th meeting of the Standing Committee of the Sixth National People's Congress on September 6, 1985. According to the fourth amendment to the Decision on Amending the Bidding Law of the People's Republic of China and the Measurement Law of the People's Republic of China at the 31st meeting of the Standing Committee of the 12th National People's Congress on December 27, 2017.