McGraw-Hill Dictionary of Engineering Second Edition

collector currentcold flow [MECH] Creep in polymer plastics. to condense vapors passing through it; used with{ kōld flō } diffusion pumps and to keep vapors from entercoldjoint [ENG] A soldered connection which ing a McLeod gage. { kōld trap }was inadequately heated, with the result that the collapse [ENG] Contraction of plastic containerwire is held in place by rosin flux, not solder. walls during cooling; produces permanent in-{ kōld jȯint } dentation. { kəlaps }cold lime-soda process [CHEM ENG] A water- collapse properties [MECH] Strength and disofteningprocess in which water is treated with mensional attributes of piping, tubing, or prochydratedlime (sometimes in combination with ess vessels, related to the ability to resist colsodaash), which reacts with dissolved calcium lapse from exterior pressure or internal vacuum.and magnesium compounds to form precipitates {kəlaps präpərdēz }that can be removed as sludge. { kōld ¦līm ¦sō collapsing pressure [MECH] The minimum exdəpräsəs }ternal pressure which causes a thin-walled bodycold molding [ENG] Shaping of an unheated or structure to collapse. { kəlapsiŋpreshər }compound in a mold under pressure, followed by collar [DES ENG] A ring placed around an objectheating the article to cure it. { kōld mōldiŋ } to restrict its motion, hold it in place, or covercold plasma [CHEM ENG] Low-energy ionized an opening. { kälər }gas. { ¦kōld plazmə }collar beam [BUILD] A tie beam in a roof trusscold plate [MECH ENG] An aluminum or otherconnecting the rafters well above the wall plate.plate containing internal tubing through which{ kälər bēm }a liquid coolant is forced, to absorb heat transcollarbearing [MECH ENG] A bearing that referredto the plate by transistors and other comsiststhe axial force of a collar on a rotating shaft.ponents mounted on it. Also known as liquid-{ kälər beriŋ }cooled dissipator. { kōld plāt }collared hole [ENG] A started hole drilled sufficoldsaw [MECH ENG] 1. Any saw for cuttingciently deep to confine the drill bit and preventcold metal, as opposed to a hot saw. 2. A diskslippage of the bit from normal position. { kälmade of soft steel or iron which rotates at aərd hōl }speed such that a point on its edge has a tangencollect[DES ENG] A sleeve or flange that cantial velocity of about 15,000 feet per minute (75meters per second), and which grinds metal bybe tightened about a rotating shaft to halt mo-friction. { kōld sȯ }tion. { kəlekt }collective bargaining [IND ENG] The negotiacoldsettling [CHEM ENG] A process that retionfor mutual agreement in the settlement ofmoves wax from high-viscosity stocks. { kōldsetliŋ }a labor contract between an employer or hiscold slug [ENG] The first material to enter anrepresentatives and a labor union or its represen-injection mold in plastics manufacturing.tatives. { kəlektiv bärgəniŋ }{ kōld sləg }collector [ELECTR] 1. A semiconductive regioncold-slug well [ENG] The area in a plastic injecleavesthe base of a transistor; the electrode orthrough which a primary flow of charge carrierstion mold which receives the cold slug from thesprue opening. { kōld sləg wel }terminal connected to this region is also calledcold-spot hygrometer See dew-point hygrometer. the collector. 2. An electrode that collects elec-{ kōld spät hīgrämədər }trons or ions which have completed their funccoldstorage [ENG] The storage of perishables tions within an electron tube; a collector receivesat low temperatures produced by refrigeration, electrons after they have done useful work,usually above freezing, to increase storage life. whereas an anode receives electrons whose use-{ ¦kōld stȯrij }ful work is to be done outside the tube. Alsocold-storage locker plant [ENG] A plant with known as electron collector. [ENG] A class ofmany rental steel lockers, each with a capacity instruments employed to determine the electricof about 6 cubic feet (0.17 cubic meter) and genmatelythe atmospheric electric field; all collec-potential at a point in the atmosphere, and ultierallyfor food storage by an individual family,placed in refrigerated rooms, at about 0F tors consist of some device for rapidly bringing(18C). { ¦kōld stȯrij läkər plant }a conductor to the same potential as the aircold stress [MECH] Forces tending to deform immediately surrounding it, plus some form ofsteel, cement, and other materials, resulting electrometer for measuring the difference in po-from low temperatures. { kōld stres }tential between the equilibrated collector andcold stretch [ENG] A pulling operation on exspeedthe earth itself; collectors differ widely in theirtruded plastic filaments in which little or no heatof response to atmospheric potentialis used; improves tensile properties. { kōld changes. { kəlektər }strech }collector capacitance [ELECTR] The depletioncoldtest [CHEM ENG] A test to determine the layer capacitance associated with the collectortemperature at which clouding or coagulation is junction of a transistor. { kəlektər kəpasədfirst visible in a sample of oil, as the temperature əns }of the sample is reduced. { kōld test }collector current [ELECTR] The direct currentcold trap [MECH ENG] A tube whose walls are that passes through the collector of a transistor.cooled with liquid nitrogen or some other liquid { kəlektər kərənt }111