| 释义 |
reducer
re·duce R0107400 (rĭ-do͞os′, -dyo͞os′)v. re·duced, re·duc·ing, re·duc·es v.tr.1. To bring down, as in extent, amount, or degree; diminish. See Synonyms at decrease.2. To bring to a humbler, weaker, difficult, or forced state or condition; especially:a. To gain control of; subject or conquer: "a design to reduce them under absolute despotism" (Declaration of Independence).b. To subject to destruction: Enemy bombers reduced the city to rubble.c. To bring to a specified undesirable state, as of weakness or helplessness: disease that reduced the patient to emaciation; teasing that reduced the child to tears.d. To compel to desperate acts: The Depression reduced many to begging on street corners.e. To lower in rank or grade; demote.3. To thicken or intensify the flavor of (a sauce, for example) by slow boiling.4. To lower the price of: The store has drastically reduced winter coats.5. To decrease the viscosity of (paint, for example), as by adding a solvent.6. To put in a simpler or more systematic form; simplify or codify: reduced her ideas to a collection of maxims.7. To turn into powder; pulverize.8. Chemistry a. To decrease the valence of (an atom) by adding electrons.b. To remove oxygen from (a compound).c. To add hydrogen to (a compound).d. To change to a metallic state by removing nonmetallic constituents; smelt.9. Mathematics To simplify the form of (an expression, such as a fraction) without changing the value.10. Medicine To restore (a fractured or displaced body part) to a normal condition or position.11. Linguistics To pronounce (a stressed vowel) as the unstressed version of that vowel or as schwa.v.intr.1. To become diminished.2. To lose weight, as by dieting.3. Biology To undergo meiosis.
[Middle English reducen, to bring back, from Old French reducier, from Latin redūcere : re-, re- + dūcere, to lead; see deuk- in Indo-European roots.]
re·duc′er n.re·duc′i·bil′i·ty n.re·duc′i·ble adj.re·duc′i·bly adv.reducer (rɪˈdjuːsə) n1. (Photography) photog a chemical solution used to lessen the density of a negative or print by oxidizing some of the blackened silver to soluble silver compounds. Compare intensifier32. (Building) a pipe fitting connecting two pipes of different diameters3. a person or thing that reducesThesaurus| Noun | 1. | reducer - a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silverreducing agent, reductantchemical agent - an agent that produces chemical reactionshydrazine - a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels | | 2. | reducer - pipefitting that joins two pipes of different diameterpipe fitting, pipefitting - fitting consisting of threaded pieces of pipe for joining pipes together |
Translationsachicadoragente riduttoreriduttore
IdiomsSeereduceReducer
reducer[ri′dü·sər] (biology) decomposer (chemistry) reducing agent (design engineering) A fitting having a larger size at one end than at the other and threaded inside, unless specifically flanged or for some special joint. (graphic arts) A solution capable of dissolving silver; used to cut down the contrast or density of a negative or positive image. Reducer (1) A mechanism in machine drives serving to reduce the angular velocity of the driven shaft in order to increase the torque. Reducers are used in gear and chain drives and in drives involving worm gears. They also find use in various combinations, such as worm-and-gear drives and chain-and-gear drives. Combined drives exist in which reducers are combined with variable-speed drives. Reducers are used in transport, hoisting, and processing machinery. (2) A device for lowering and maintaining a constant pressure of a working medium (gas, steam, or liquid) at the outlet of a high-pressure container. The reducer simultaneously serves as a safety and cutoff valve. Reducers are used in gas welders, in saturators, and in water chlorinators. They are also used in various apparatus for carrying out such secondary operations as mixing, preheating, and cooling.  Figure 1. Reducers featuring (a) forward and (b) reverse action; (1) cutoff spring, (2) valve, (3) tappet, (4) diaphragm, (5) disk, and (6) spiral spring
The basic element of a reducer (Figure 1) is the reducing valve, which is connected to a flat, flexible diaphragm. A spiral spring acts against one side of the diaphragm, and the pressure of the gas or liquid acts against the other. Forward reducers, in which the spiral spring acts in the same direction as the pressure (Figure 1,a), are distinguished from reverse reducers, in which the spring and pressure act in opposite directions (Figure 1,b). Depending on the working medium for which the reducer is designed, reducers are called oxygen, acetylene, or hydrogen reducers. Reducers are designed with either one or two chambers so as to effect, respectively, one-step or two-step reduction in pressure. G G. MIRZABEKOV reducer  reducer, 2 1. A thinner or solvent; used to lower the viscosity of a paint, varnish, or lacquer. 2. A reducing pipe. 3. A reducing valve.reducer
Related to reducer: reducing agentSynonyms for reducernoun a substance capable of bringing about the reduction of another substance as it itself is oxidizedSynonymsRelated Wordsnoun pipefitting that joins two pipes of different diameterRelated Words |