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Discover LudwigThe phrase "what duration" is grammatically correct and can be used in written English.
It is typically used to ask about the length of time something will take or to inquire about the duration of a certain event or activity. Example: "What duration does the concert usually last?" or "Can you tell me what duration we can expect the meeting to be?".
Exact(29)
For what duration?
That's what duration offers above all: time to take in a variety of possibilities.
I decide how much water flows over its lip at what velocity, and for what duration.
The officer takes a history and starts dialing treatment facilities, where clinicians determine what treatment best suits the addict and of what duration.
Once the decision of storage temperature is made, the primary factor determining the size and layout of the storage is the type and amount of product to be held, and for what duration.
"We need more research to determine what duration of exposure to loud noise is harmful, but we do know that the risk comes from years and years of exposure, not days," he added.
Similar(31)
Duration is supposed to be an interesting property of modern art, but, oh, what a duration this was, an hour and forty minutes of three or four steps, plus endlessly flapping arms.
If duration values are not provided then durationActual and durationNormal are left as None – meaning that it is unspecified what the duration that completes the tuplet is.
"It's what the duration is.
No matter what its duration, Mr. Clinton is likely to be subject to criticism.
"It captures much of what long duration space flight is about now: dirty, sweaty and claustrophobic with long periods of boredom followed by moments of sheer terror".
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com