វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
តូច
មធ្យម
ធំ
wipes
is a form of:
Columbite
Same as:
niobite
ENGLISH MEANING
noun
1.
A
mineral
of a
black
color
,
submetallic
luster
, and
high
specific
specific
gravity
. It is a
niobate
(or
columbate
) of
iron
and
manganese
,
containing
tantalate
of
iron
; --
first
found
in
New
England.