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atomic clock (not to be confused with radio clock)
He measures time accurately using an atomic clock.
atomic weight
The atomic weight of helium is 4.
nuclear fission
Nuclear fission is a powerful phenomenon that generates energy.
Kyūjitai form of 原子炉 (“nuclear reactor”)
This nuclear reactor is designed to be very safe.
boiler / furnace
There is an old boiler in this house.
an electric arc furnace
In this factory, they are melting iron using an electric arc furnace.
decommissioning a nuclear reactor
This nuclear power plant is scheduled to be decommissioned next year.
to decommission a nuclear reactor
The government announced a plan to decommission the old nuclear power plant.
Alternative spelling of ろ座 (“Fornax”)
Fornax is one of the constellations in the southern hemisphere.
mantelpiece
He decorated the mantelpiece with photos.
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