- test sieves
- Цемент: испытательные сита
Универсальный англо-русский словарь. Академик.ру. 2011.
test sieves
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Gradation test — A gradation test, or sieve analysis, is a commonly used procedure in civil engineering that measures the size distribution, or gradation, of an aggregate, such as sand, crushed rock, or clay. A gradation test is performed on a sample of aggregate … Wikipedia
Retsch GmbH — is a German company operating in the characterization of solids and the preparation of samples for analytical testing.The company whose headquarters are located in Haan, near Dusseldorf – maintains subsidiaries in the USA, Japan, Great Britain,… … Wikipedia
Generating primes — In mathematics, a variety of algorithms make it possible to generate prime numbers efficiently. These are used in various applications, for example hashing, public key cryptography, and search of prime factors in large numbers.For relatively… … Wikipedia
Mesh (scale) — Mesh material is often used in determining the particle size distribution of a granular material. For example, a sample from a truckload of peanuts may be placed atop a mesh with 5 mm openings. When the mesh is shaken, small broken pieces… … Wikipedia
petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… … Universalium
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
Prime number — Prime redirects here. For other uses, see Prime (disambiguation). A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is… … Wikipedia
Lehmer sieve — Lehmer sieves are named for Derrick Norman Lehmer and his son Derrick Henry Lehmer. The father was a professor of mathematics at the University of California, Berkeley at the time, and his son was to follow in his footsteps, as a number theorist… … Wikipedia
cereal processing — Introduction treatment of cereals (cereal) and other plants to prepare their starch for human food, animal feed, or industrial use. Nutrient composition of selected raw cereal grains (per 100 grams)Cereals, or grains, are members of… … Universalium
List of Emily Dickinson poems — This is a list of Emily Dickinson poems. There are 1,775 known poems that have been written by Dickinson. The poems are alphabetized by their first line. Punctuation, capitalization and even in some cases wording of the first lines may vary… … Wikipedia
Number theory — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… … Wikipedia
