| 释义 |
two-ˈpipe, a.
a. Applied to a system of hot-water heating in which a flow pipe supplies the radiators and a separate return pipe receives water from them.
1897F. Dye Hood's Pract. Treat. Warming Buildings (ed. 3) xviii. 328 The arrangement of pipes is on the ordinary two-pipe principle. A flow and return is carried in different directions almost from a central point. 1970[see one-pipe a. a].
b. Applied to a system of plumbing in which separate waste-pipes and soil-pipes are employed.
1946E. Molloy Plumbing & Gas-Fitting x. 203 The ‘dual’ or ‘two-pipe’ system, in which the removal of excretal matters..is effected by a pipe connected direct to the drain, and the removal of waste water..effected by a second pipe..discharging..over or into a properly trapped gully. 1972T. A. Tompson Guide Sanitary Engin. Services vii. 226 The two-pipe system of sanitation is rarely used today and has been largely replaced by a more economic design. |