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Discover LudwigThe phrase "is dual" is grammatically correct and can be used in written English.
It means that something has two distinct parts, aspects, or functions. Example: The statue's symbolism is dual – it represents both power and sacrifice.
Dictionary
is dual
adjective
Exhibiting duality; characterized by having two (usually equivalent) components.
Exact(45)
Its role is dual.
Inherently, the presidency is dual in character.
This example is dual to Example 14.11.2.
Diagnosis The essence of a matrix is dual command.
"If this is dual use, then everything else is".
The starting point is dual quaternion and its properties.
Similar(15)
Nothing is dual-purpose; nothing folds down into anything else.
But much research in biology is dual-use by its very nature.
This is dual-use research, meaning research that can be used for good and bad purposes.
The one used most often is dual-energy x-ray absorptiometry (DXA).
Uranium enrichment is dual-purpose – it can produce fuel both for nuclear power stations and for warheads.
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CEO of Professional Science Editing for Scientists @ prosciediting.com