| 单词 | ring main |
| 释义 | > as lemmasring main ring main n. (a) an arrangement of pipes (for steam, water, sewage, etc.) that forms a loop whose draw-off points are supplied by flow from two directions; (b) an electric main in the form of a loop (so that there is an alternative path for the supply to any point), either connecting a number of buildings to a supply station or a number of outlets to a fuse box; cf. ring circuit n. ΘΚΠ society > occupation and work > equipment > conveyor > [noun] > conduit, channel, or tube > pipe > system or arrangement of piping1729 pipework1849 pipeline1856 reticulation1859 ring main1868 plumbinga1929 grid1943 the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > wire as conductor > [noun] > loop system ring main1868 ring circuit1879 the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > distribution system > [noun] > cable > supplying the public > allowing alternative path ring main1868 1868 H. Bauerman Treat. Metall. Iron viii. 176 The blast coming from the stoves passes through a ring main. 1892 J. A. Fleming Alternate Current Transformer II. ii. 207 (caption) The Metropolitan Company's system of ring mains. 1930 Engineering 17 Jan. 92/1 In the near future it would probably be necessary to connect these lines by ring mains. 1959 F. G. Goodin & J. Downing Domestic Sanitation iv. 97 The use of ring mains tends to reduce the size of pipes which must be used. 1976 G. Moffat Short Time to Live vi. 53 He'd..modernise the place: put in a ring main, dig drains, build a septic tank. 1996 K. J. Moss Heating & Water Services Design in Buildings v. 127 A steam ring main follows the perimeter of a factory at high level with connections coming off the ring as shown. < as lemmas |
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