词汇“hard upon”的中英文读音、翻译、用法及例句

词汇	hard upon
释义	请查阅词条：hard
随便看	heat transfer test heat-run heat-supply engineering heat transfer experiment heat running test heat supply heat transfer technology heat-supply load factor heat supply main heat transfer equipment heat transfer factor heat transfer theory heat supply network heatremoving heat transfer through curved wall heat treated structure heat transfer, thermal transmission heat supply pipeline heat treated treatment condition heat ray filter heat riser heat-supply pipeline heat-supply network heat transfer film-coefficient heat-treated surface