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Что (кто) такое parquet block - определение
ORNATE WOODEN FLOOR DESIGN
Parquet; Parquet floor; Parquet flooring; Parquet floors; Parqet
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Найдено результатов: 1455
parquet
['p?:ki, 'p?:ke?]
¦ noun
1. flooring composed of wooden blocks arranged in a geometric pattern.
2. N. Amer. the orchestra pit or ground floor of an auditorium.
Derivatives
parqueted adjective
parquetry noun
Origin
C17 (as v.): from Fr., lit. 'small park' (i.e. delineated area).
parquet
Parquet is a floor covering made of small rectangular blocks of wood fitted together in a pattern.
...the polished parquet floors.
N-UNCOUNT: usu N n
Parquet
·noun ·same·as Parquetry.
II. Parquet ·noun A body of seats on the floor of a music hall or theater nearest the orchestra; but commonly applied to the whole lower floor of a theater, from the orchestra to the dress circle; the pit.
III. Parquet ·add. ·noun In most European countries, the branch of the administrative government which is charged with the prevention, investigation, and punishment of crime, representing the public and not the individual injured.
IV. Parquet ·add. ·noun In various European public bourses, the railed-in space within which the "agents de change," or privileged brokers, conduct business; also, the business conducted by them;
- distinguished from the coulisse, or outside market.
Parquetry
·noun A species of joinery or cabinet-work consisting of an inlay of geometric or other patterns, generally of different colors, - used especially for floors.
parquet
n.
[Fr.] Pit, parterre.
parquetry
n.
Marquetry.
Block (permutation group theory)
TERM IN MATHEMATICS AND GROUP THEORY
Block system
In mathematics and group theory, a block system for the action of a group G on a set X is a partition of X that is G-invariant. In terms of the associated equivalence relation on X, G-invariance means that
block system
TERM IN MATHEMATICS AND GROUP THEORY
Block system
¦ noun a system of railway signalling which divides the track into sections and allows no train to enter a section that is not completely clear.
Block system
TERM IN MATHEMATICS AND GROUP THEORY
Block system
·add. ·- A system by which the track is divided into short sections, as of three or four miles, and trains are so run by the guidance of electric, or combined electric and pneumatic, signals that no train enters a section or block until the preceding train has left it, as in absolute blocking, or that a train may be allowed to follow another into a block as long as it proceeds with excessive caution, as in permissive blocking.
Block System
TERM IN MATHEMATICS AND GROUP THEORY
Block system
A system of signalling on railroads. The essence of the system consists
in having signal posts or stations all along the road at distances
depending on the traffic. The space between each two signal posts is
termed a block. From the signal posts the trains in day time are
signalled by wooden arms termed semaphores, and at night by lanterns.
The arms may be moved by hand or by automatic mechanism depending in
part on electricity for carrying out its functions. Thus in the
Westinghouse system the semaphores are moved by pneumatic cylinders and
pistons, whose air valves are opened and shut by the action of solenoid
magnets, q. v. The current of these magnets is short circuited by
passing trains, so as to let the valves close as the train passes the
signal post. The block system causes the semaphore to be set at "danger"
or "caution," as the train enters the next block. Then the following
train is not allowed to enter the block until the safety signal is
shown. The Westinghouse system provides for two semaphores on a post,
one indicating "danger" as long as the train is on the next block; the
other indicating "caution" as long as the train is on the next two
blocks. The rails form part of the circuit, their joints being bridged
by copper wire throughout the block, and being insulated where the
blocks meet.
Википедия
Parquetry
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Parquet (French: [paʁkɛ]; French for "a small compartment") is a geometric mosaic of wood pieces used for decorative effect in flooring.
Parquet patterns are often entirely geometrical and angular—squares, triangles, lozenges—but may contain curves. The most popular parquet flooring pattern is herringbone.
