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
radioactivity考试真题- 查字库

看音标读英语

查字库

首页英语词典radioactivityradioactivity考试真题

radioactivity

英 [,reɪdɪəʊæk'tɪvɪtɪ] 美[,redɪoæk'tɪvəti]

英英释义考试真题实用场景例句

n. 放射性；[核] 放射能力；[核] 放射现象

考试真题

Frederic became one of her assistants, and Irene taught him the techniques required to work with radioactivity.