| 单词 | downcomer |
| 释义 | downcomer [`dau̇n´kǝm·ǝr] BUILDING CONSTRUCTION See <<downspout>> CHEMICAL ENGINEERING A method of conveying liquid from one tray to the one below in a bubble-tray column. ENGINEERING In an air-pollution control system, a pipe that conducts gases downward to a device that removes undesirable substances. MECHANICAL ENGINEERING A tube in a boiler waterwall system wherein the fluid flows downward. |
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