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	head noise headnote head noun head nurse head office head of hair head of house head of state head-on head (or cut) someone/thing off at the pass head over heels head penny headphone headpiece head-place head-plate headpost head pump headquarter headquarters head race headrail head-reach head register head rent

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。