| 单词 | upper surface |
| 释义 | upper surface (once / 5925 pages) n WORD FAMILY upper surface: upper surfaces USAGE EXAMPLESThe wing's upper surface arches upward, whereas its bottom surface is relatively flat. Science Magazine(Nov 28, 2016) "Nothing is known today that attaches the young by threads to its upper surface," said co-author Derek Briggs, from Yale University in the US. BBC(Apr 04, 2016) The upper surface of the ice sheet dips 50 meters as it flows over the buried crest of this volcano. Scientific American(Jul 10, 2015) n the side that is uppermost Hypo|Hyper ceiling the overhead upper surface of a covered space overhead(nautical) the top surface of an enclosed space on a ship side an extended outer surface of an object |
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