> 英语 >
a gaseous mixture that is a homogeneous mixture of a compound and an element
show example
化合物&元素
人气:494 ℃ 时间:2020-05-07 16:50:31
解答
臭氧和氧气
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版