Warning: flock() expects parameter 1 to be resource, boolean given in /www/wwwroot/www.chaziku.com/e/class/connect.php on line 5100

Warning: flock() expects parameter 1 to be resource, boolean given in /www/wwwroot/www.chaziku.com/e/class/connect.php on line 5105
hydrogen考试真题- 查字库

看音标读英语

查字库

首页英语词典hydrogenhydrogen考试真题

hydrogen

英 ['haɪdrədʒ(ə)n] 美['haɪdrədʒən]

英英释义考试真题实用场景例句

n. [化学] 氢

考试真题

Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.

hydrogen

考试真题

考试词汇

分类词汇

频率词汇

单词首字母