They have come up with two sorts, one for heavily polluted water and one for water that is only lightly polluted.
他们已经发现了两种光活性催化剂，一种用于净化严重污染的水，一种用于净化轻度污染的水。
They have come up with two sorts, one for heavily polluted water and one for water that is only lightly polluted.
他们已经发现了两种光活性催化剂，一种用于净化严重污染的水，一种用于净化轻度污染的水。
应用推荐