Letter U:
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U clamp
EN: U clamp, U-clamp, U-shaped clamp
ES: abrazadera en UDefinition EN: a clamp having an open slot for receiving the clamp bolt
U packing
EN: U packing, U packing ring, cup packing
ES: guarnición para juntas, manguito obturadorDefinition EN: a soft packing ring,generally made of leather or rubber,which is pressed into a U-shaped or("cup packing")L-shaped section.By reason of the elasticity of the material,which is increased by the pressure of the fluid,the sealing lips of the packing tend to resume their flat shape,thereby exerting pressure on the rod which they encircle
U packing ring
EN: U packing ring, U packing, cup packing
ES: guarnición para juntas, manguito obturadorDefinition EN: a soft packing ring,generally made of leather or rubber,which is pressed into a U-shaped or("cup packing")L-shaped section.By reason of the elasticity of the material,which is increased by the pressure of the fluid,the sealing lips of the packing tend to resume their flat shape,thereby exerting pressure on the rod which they encircle
U seal
EN: U seal
ES: junta en UDefinition EN: a radial lip seal having inner and outer lips,the cross section being in the form of a "U"
U-clamp
EN: U-clamp, U-shaped clamp, U clamp
ES: abrazadera en UDefinition EN: a clamp having an open slot for receiving the clamp bolt
U-lag
EN: U-lag, U-lag for jigs and fixtures
ES: ranura para sujecionesDefinition EN: a slot provided in the edge of the base of a workholder for the reception of a hold-down bolt
U-lag
EN: U-lag
ES: ranura para sujecionesDefinition EN: a slot provided in the edge of the base of a workholder for the reception of a hold-down bolt
U-Pump
EN: U-Pump
ES: bomba con válvula en el émboloDefinition EN: a reciprocating piston pump in which the valves are placed in the piston and the flow through the cylinder is in one direction with no reversal
Definition ES: bomba de émbolo de movimiento rectilíneo alternativo en la cual las válvulas van colocadas en el émbolo y la corriente a través del cilindro tiene siempre la misma dirección, sin invertirse
UF6
EN: UF6, hex, uranium hexafluoride
ES: hexafluoruro de uranioDefinition EN: a colloquialism for uranium hexafluoride(UF6),the gas used in isotope enrichment plants
UIS
EN: UIS
ES: estructura de la partes internas superioresDefinition EN: the upper internals structure(UIS)of the Clinch River breeder reactor(CRBR),as currently designed by Westinghouse Advanced Reactor Division,is essentially a portal frame hung(cantilevered)from the cover plate of the pot-concept reactor vessel
ullage and retro-rocket
EN: ullage and retro-rocket, ullage and retrorocket
ES: cohete de aceleración y frenadoDefinition EN: rocket which can be used both to oppose forward motion and to apply axial thrust to a vehicle
ultimate gauge length
EN: ultimate gauge length
ES: longitud final entre puntosDefinition EN: the ultimate gauge length is the gauge length after fracture of the test piece and piecing it together again, its two fragments being joined carefully so that their axes form a straight line
ultimate stress
EN: ultimate stress
ES: esfuerzo máximo, esfuerzo límiteDefinition EN: that in a member or piece of material at moment of fracture
ultra high frequency thawing
EN: ultra high frequency thawing, microwave thawing
ES: descongelación por hiperfrecuencias, descongelación por ultrafrecuenciasDefinition EN: dielectric thawing using frequencies of the order of thousands of megahertz,usually 2450 MHz or 915 MHz in accordance with the international telecommunication union
ultra-high vacuum
EN: ultra-high vacuum
ES: ultravacíoDefinition EN: pressure below 75.10-9 mm Hg
Definition ES: vacío extremado de los gases, cuando su presión no pasa de 10-8 Torr
ultrasonic sounding
EN: ultrasonic sounding, echo sounding
ES: sondeo ultrasónicoDefinition EN: a method used in geology,oceanography,metallurgy,etc.for depth determination by means of ultrasonic waves produced by an electrical generator
ultrasounds
EN: ultrasounds, ultrasonic wave
ES: ultrasonido, onda ultrasónicaDefinition EN: a wave phenomenon of the same physical nature as sound but with frequencies above the range of human hearing,i.e.greater than 20 kHz
ultraviolet degradation
EN: ultraviolet degradation
ES: degradación por la radiación ultravioletaDefinition EN: the degradation caused by long-time exposure of a material to sunlight or other ultraviolet rays
ultraviolet recorder
EN: ultraviolet recorder
ES: registrador gráfico mediante ultravioletaDefinition EN: a recorder which records by means of light beam(s)and mirror galvanometer(s)on light sensitive paper or film
umbilical connector
EN: umbilical connector, release plug, pull-off connector
ES: conexión desprendible, toma largableDefinition EN: means of connection between a vehicle and the ground,along which all necessary supplies and signals pass,up to the moment of lift-off or launch
umbilical connector
EN: umbilical connector, pull-off connector, release plug
ES: conexión desprendible, toma largableDefinition EN: means of connection between a vehicle and the ground,along which all necessary supplies and signals pass,up to the moment of lift-off or launch
unalloyed steels
EN: unalloyed steels
ES: aceros no aleadosDefinition EN: unalloyed steels are defined by their carbon content
unbalanced vane motor
EN: unbalanced vane motor
ES: motor de paletas no equilibradasDefinition EN: motor in which the transverse forces acting on the rotor are not balanced
unbleached pulp
EN: unbleached pulp
ES: celulosa cruda, pulpa marrón, pasta sin blanquear, pulpa cruda, pasta química, pulpa sin blanquear, pulpa café, pasta crudaDefinition EN: pulp which has not been subjected to any treatment intended to increase its brightness
uncased hole
EN: uncased hole, open hole
ES: pozo abierto, pozo sin entubarDefinition EN: an uncased well bore; the section of the well bore below the casing; a well in which there is no protective string of pipe
uncertainty of measurement
EN: uncertainty of measurement
ES: incerteza de medidaDefinition EN: an estimate characterizing the range of values within which the true value of measurand lies
Definition ES: estimación que caracteriza la amplitud del intervalo de valores en el que se encuentra el valor verdadero de una magnitud medida
unclamp
EN: unclamp, release
ES: retirar, soltarDefinition EN: to remove from a clamping device
unclamp
EN: unclamp
ES: soltarEN: release
ES: retirarDefinition EN: to remove from a clamping device
unconditional jump
EN: unconditional jump, unconditional branch
ES: salto incondicionalDefinition EN: a jump that takes place whenever the instruction that specifies it is executed
uncut pile
EN: uncut pile, loop pile
ES: bucleDefinition EN: a pile,the fibres or yarns of which are caused to form loops during manufacture of the fabric
undercarriage leg
EN: undercarriage leg, landing-gear leg, LG leg
ES: pata del trenDefinition EN: main strut of landing gear(LG)
undercarriage uplock
EN: undercarriage uplock, LG uplock, landing-gear uplock
ES: cerrojo de tren metido, cerrojo de tren plegadoDefinition EN: mechanical lock-securing device to keep the landing-gear secure once it is retracted
undercut
EN: undercut
ES: contra despullaDefinition EN: any protrusion or notch in a two-piece rigid mould which hinders removal of the piece from the mould.
undercut
EN: undercut
ES: oquedad, socavaduraDefinition EN: a groove that has been melted at the side of the weld and has not been filled in
underdraft
EN: underdraft
ES: curvado hacia abajoDefinition EN: the tendency of metal to curve downwards when leaving rolls,because of lower surface speed of the lower roll.
underfill
EN: underfill
ES: falta de metal en forja y estampaciónDefinition EN: that portion of a die forging which lacks metal to give it the true shape of the impression.Shortage of metal exists because the hot plastic metal did not completely fill the die impress
underfill
EN: underfill
ES: falta de metal en laminaciónDefinition EN: in rolling,a cross-section which has not filled the roll pass and is therefore not true to dimensions
underground
EN: underground
ES: minaEN: below ground
ES: interiorDefinition ES: todo el espacio subterráneo de una mina a partir de la bocamina
underlap
EN: underlap
ES: solapamiento negativoDefinition EN: a condition where the fixed and movable flow metering edges do not coincide with the spool at null in such a way that a flow path exists across two or more metering edges with the spool at null
undermining pitting
EN: undermining pitting
ES: corrosión subsuperficialDefinition EN: a type of corrosion attack in which pitting develops on the exposed surface and spreads out beneath the surface
undersize
EN: undersize
ES: menorDefinition EN: that part of a crushed material which passes through a screen
undetected failure time
EN: undetected failure time
ES: tiempo previo a la detección del falloDefinition EN: the period of time between the instant of failure and its recognition
unequal-sidedness
EN: unequal-sidedness, two-sidedness
ES: acabado dos caras, acabado dúplex, acabado diferente por ambas caras, acabado doble caraDefinition EN: a difference,e.g.in surface structure or colour,between the two sides of a paper or board,arising during the manufacturing process
unfeather
EN: unfeather
ES: sacar de paso bandera, sacar de banderaDefinition EN: to restore propeller from feathered state to normal operative state
unfused chaplet
EN: unfused chaplet
ES: soporte mal soldadoDefinition EN: metal supports which should become part of the casting but they sometimes fail to fuse completely with the surrounding metal
uniform resource locator
EN: uniform resource locator, URL
ES: localizador uniforme de recursos, LURDefinition ES: Sistema unificado de identificación de recursos en la red. Las direcciones se componen de protocolo, FQDN y dirección local del documento dentro del servidor. Este tipo de direcciones permite identificar objetos WWW, Gopher, FTP, News, etc.
unilaterally aligned standard
EN: unilaterally aligned standard
ES: norma alineada unilateralmenteDefinition EN: standard that is aligned with another standard so that products,processes,services,tests and information provided according to the former standard meet the requirements of the latter standard but not vice versa
union
EN: union, socket union
ES: unión roscada de tres tubosDefinition EN: a pipe fitting similar to a coupling,but composed of three detachable parts-two being screwed on to the tubes and the third(a nut)being used to tighten them
union fitting
EN: union fitting
ES: junta de uniónDefinition EN: a fitting which permits pipes to be joined and separated without requiring the pipes to be rotated
union tube
EN: union tube
ES: tubería de uniónDefinition EN: three-piece threaded pipe fitting used to join two tubes or pipes or to connect a pipe to a component
Letter U:
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