McGraw-Hill Dictionary of Engineering Second Edition

sloughwasher with a slot extending from its edge to the sluicing pond See scouring basin. { slüsiŋcenter hole to allow the washer to be removed pänd }without first removing the bolt. { slät wäsh slump test [ENG] Determining the consistencyər }of concrete by filling a conical mold with a sam-slough [ENG] The fragments of rocky material ple of concrete, then inverting it over a flat platefrom the wall of a borehole. Also known as and removing the mold; the amount by whichcavings. { slau˙ } the concrete drops below the mold height isslow igniter cord [ENG] An igniter cord made measured and this represents the slump.with a central copper wire around which is ex- { sləmp test }truded a plastic incendiary material with an iron slurry bed reactor See ebullating-bed reactor.wire embedded to give greater strength; the { slərē bed rēaktər }whole is enclosed in a thin extruded plastic coating.slurrying [ENG] The formation of a mud or a{ slō ignīdər kȯrd } suspension from a liquid and nonsoluble solidslow match [ENG] A match or fuse that burns particles. { slərēiŋ }at a known slow rate; used for igniting explosive slurry preforming [ENG] The preparation of reinforcedcharges. { slō mach }plastics preforms by wet-processingslow sand filter [CIV ENG] A bed of fine sand techniques; similar to pulp molding. { slərē20–48 inches (151–122 centimeters) deep prēfȯrmiŋ }through which water, being made suitable for slurry truck [ENG] A mobile unit that transportshuman consumption and other purposes, is dry blasting ingredients, and mixes them in re-passed at a fairly low rate, 2,500,000 to quired proportions for introduction as explosive10,000,000 gallons per acre (23,000 to 94,000 cubicslurry into blastholes. { slərē trək }meters per hectare); an underdrain system slusher [ENG] A method for the application ofof graded gravel and perforated pipes carries the vitreous enamel slip to ware by dashing it onwater from the filters to the point of discharge. the ware to cover all its parts, excess then being{ slō sand filtər }removed by shaking the ware. { sləshər }slow-spiral drill See low-helix drill. { slō ¦spīrəl slush grouting [CIV ENG] Spreading a portlanddril }cement slurry over a surface that will subsesludge[CHEM ENG] 1. Residue left after acid quently be covered by concrete. { sləshtreatment of petroleum oils. 2. Any semisolid grau˙ diŋ }waste from a chemical process. [CIV ENG] See slush molding [ENG] A thermoplastic casting insewage sludge. [ENG] 1. Mud from a drill hole which a liquid resin is poured into a hot, hollowin boring. 2. Sediment in a steam boiler. mold where a viscous skin forms; excess slush is3. A precipitate from petroleum oils or liquid drained off, the mold is cooled, and the moldedfuels, for example, the insoluble degradation product is stripped out. { sləsh mōldiŋ }products formed during the operation of an internalslushpit [ENG] An excavation or diked area tocombustion engine. 4. An amorphous hold water, mud, sludge, and other dischargeddeposit that has accumulated on the surface of matter from an oil well. Also known as muda tube in a heat exchanger or of an evaporating pit; sludge pit; sludge pond. { shəshpit }device, but is not bonded to the fouled surface. small calorie See calorie. { smȯl kalərē }5. See slime. { sləj } small-diameter blasthole [ENG] A blast holesludge bucket See calyx. { sləj bəkət }1 1 / 2 to 3 inches (3.8 to 7.6 centimeters) in diame-sludge coking [CHEM ENG] The recovery of sul- ter, in low-face quarries. { smȯl dī¦amədərfuric acid from dry acid sludge. { sləj kōkiŋ } blasthōl }sludge pit See slushpit. { sləj pit } small-lot storage [IND ENG] Generally, a quantitysludge pond See slushpit. { sləj pänd }of less than one pallet stack, stacked to maxisludgesludge pump See sand pump. { sləj pəmp } mum storage height; thus, the term refers to asluff [ENG] The mud cake detached from the lot consisting of from one container to two orwall of a borehole. { sləf } more pallet loads, but is not of sufficient quantityslug [MECH] A unit of mass in the British gravitationalto form a complete pallet column. { smȯl ¦lätsystem of units, equal to the mass which stȯrij }experiences an acceleration of 1 foot per second small-scale hydropower [MECH ENG] The gen-per second when a force of 1 pound acts on it; eration of electricity by using hydraulic turbinesequal to approximately 32.1740 pound mass or in which the installed capacity of the plant lies14.5939 kilograms. Also known as geepound. within the range from 5 kilowatts to 5 megawatts.{sləg }{ smȯl skāl hīdrəpaüər }slug bit See insert bit. { sləg bit } smart sensor [ENG] A microsensor integratedsluice [CIV ENG] 1. A passage fitted with a verticalwith signal-conditioning electronics such as ana-sliding gate or valve to regulate the flow of log-to-digital converters on a single silicon chipwater in a channel or lock. 2. A body of water to form an integrated microelectromechanicalretained by a floodgate. 3. A channel serving component that can process information itselfto drain surplus water. { slüs }or communicate with an embedded micropro-sluice gate [CIV ENG] The vertical slide gate of cessor. Also known as intelligent sensor.a sluice. { slüs gāt }{ smärt sensər }508