| 单词 | point source |
| 释义 | point source (once / 787955 pages) n WORD FAMILY point source: point sources USAGE EXAMPLESSo OCO-2 scientists were never expecting to record the emissions of individual point sources, like volcanoes or coal-fired power plants. Science Magazine(Dec 15, 2016) In a commercial setting, CO2 could come from a point source like a power plant, Yu said. Scientific American(Aug 17, 2015) Only one type of pollution—point sources such as factories—was not significantly linked to lower grade point averages. Scientific American(Jul 24, 2015) n a concentrated source (especially of radiation or pollution) that is spatially constricted Hyper beginning, origin, root, rootage, source the place where something begins, where it springs into being |
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