វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Protoxide
ENGLISH MEANING
noun
1.
That
one of a
series
of
oxides
having the
lowest
proportion
of
oxygen
.