Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
Arabic
English
French
Russian
Spanish
Terms
for subject
Physical sciences
containing
透镜
|
all forms
|
in specified order only
Chinese
English
凸
正,会聚
透镜
convex lens
凹
负，发散
透镜
concave lens
Get short URL
