英语词汇“permanent hardness”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	permanent hardness
释义	permanent hardness noun [mass noun] The presence in water of mineral salts (chiefly calcium sulphate) that are not removed by boiling.
随便看	trench warfare trend Trendelenburg position trendify trendily trendiness trend line trendoid trendsetter trendsetting trendspotter trendspotting trendy Trengganu Trent Trent, Council of trente et quarante Trentino-Alto Adige Trento Trenton trepan trepanation trepang trephination trephine

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。