វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Paraffine
ENGLISH MEANING
noun
1.
A
white
waxy
substance
,
resembling
spermaceti
,
tasteless
and
odorless
, and
obtained
from
coal
tar
,
wood
tar
,
petroleum
,
etc
., by
distillation
. It is
used
as an
illuminant
and
lubricant
. It is
very
inert
, not
being
acted
upon
by
most
of the
strong
chemical
reagents
. It was
formerly
regarded
as a
definite
compound
,
but
is
now
known
to be a
complex
mixture
of
several
higher
hydrocarbons
of the
methane
or
marsh-gas
series
;
hence
, by
extension
,
any
substance
,
whether
solid
,
liquid
, or
gaseous
, of the
same
chemical
series
;
thus
coal
gas
and
kerosene
consist
largely
of
paraffins
.