单词	downcomer
释义	downcomer /ˈdaʊnkʌmə / noun A pipe for the downward transport of water or gas from the top of a furnace or boiler.They responded by putting forward a new plan - using the tides of the Huangpu to wash the existing downcomers and main sewer regularly.... The size and number of downcomers installed varies from one type of boiler to another, but downcomers are installed in all naval boilers.
随便看	groundnut oil groundout ground pine ground plan ground rent ground rule ground run groundsel groundshare groundsheet groundsill groundskeeper ground sloth groundsman ground speed ground squirrel ground staff ground state groundstroke groundswell ground tackle ground-to-air ground troops ground truth ground truthing

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。