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The relationship between measurement and measurement

by:Sure     2021-08-07
The activity to achieve unity and accurate and reliable measurement is measurement. Metrology refers to the process of determining the accuracy of the measuring instrument by comparing the measuring instrument with the benchmark or standard equipment of the national metrology department (the measuring value of the instrument is compared with the benchmark or standard measuring value). 2. A broad understanding refers to the entire field of measurement knowledge. Metering is called weights and measures in history. With the realization of unity and accurate and reliable measurement, the activity is measurement. Metrology refers to the process of determining the accuracy of the measuring instrument by comparing the measuring instrument with the benchmark or standard equipment of the national metrology department (the measuring value of the instrument is compared with the benchmark or standard measuring value). 2. A broad understanding refers to the entire field of measurement knowledge. Metrology is called 'weights and measures' in history. With the development of production and science and technology, modern metrology has gone far beyond the scope of 'weights and measures'. Existing metrology majors such as length, heat, mechanics, electromagnetics, radio, time frequency, ionizing radiation, optics, acoustics, chemistry, etc., have formed an independent discipline ─ ─ metrology. 3. Metrology is a high-precision measurement, a special form of measurement used to determine the accuracy of instruments and meters. 4. The legal measurement units are: length name, centimeter, inch, foot, etc., 10 millimeters, 10 centimeters, 10 minutes, 10 inches, 10 feet, 150 meters, area name, square centimeters, square centimeters, square feet, square meters, square meters, etc. 100 square cents 100 square inches 100 square feet 22500 square meters plot name centifenmu hectares 10 cents 10 cents 10 cents 100 acres quality name milli cents two catties equals 10 silk 10 cents 10 cents 10 cents 10 money 10 Two 100 kg capacity name scoops, liters, buckets, etc., 10 pinches, 10 scoops, 10 liters, 10 buckets, measurement unit comparison table, length comparison table 1 kilometer (km) u003d 2 city u003d 0.621 miles u003d 0.540 nautical miles, 1 meter u003d 3 city Feet u003d 3.281 feet 1 city u003d 0.5 kilometers (km) u003d 0.311 miles u003d 0.270 nautical miles 1 city foot u003d 0.333 meters u003d 1.094 feet 1 mile u003d 1.609 kilometers (km) u003d 3.218 city u003d 0.869 nautical miles 1 foot u003d 0.305 meters u003d0.914 city foot 1 nautical mile u003d 1.852 kilometers (km) u003d 3.704 city area u003d 1.150 miles plot comparison table 1 hectare u003d 15 city acres u003d 2.471 acres 1 city acres u003d 6.667 ares u003d 0.165 acres 1 acre u003d 0.405 hectares u003d 6.070 Comparison table of mass per mu 1 kg (kg) u003d 2 catties u003d 2.205 pounds 1 catty u003d 0.5 kilograms (kg) u003d 1.102 pounds 1 pound u003d 0.454 kilograms (kg) u003d 0.907 city catties capacity comparison table 1 liter (metric system) u003d 1 city rise u003d 0.220 gallons (imperial system)     1 gallon (imperial system) u003d 4.546 liters u003d 4.546 city liters
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