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The phrase "first-order approximation" is correct and usable in written English
It is typically used in mathematical, scientific, or engineering contexts to refer to a simplified model or estimate that captures the primary effects of a system. Example: "In our calculations, we used a first-order approximation to estimate the behavior of the system under small perturbations."
Exact(40)
In a first-order approximation the polymers in solution can consequently be approximated by rigid rods.
In theory, the YY2011 method is a first-order approximation.
A first-order approximation of penetration depth is developed for use in engineering design.
Plastic deformation is ignored in the current analysis as a first-order approximation.
The first-order approximation is sufficient to model the behaviour of high resistive opens.
This method provides a first-order approximation of maximum ice loss from glaciers in Køge Bugt over the last 9100 years.
Similar(20)
For each isolated subsystem a first order approximation is obtained.
The first order approximation of this model is integrable.
However, as a first order approximation to the diffusion time, we assume is constant.
However, this aberration can be shown to be negligible under first order approximation (FOA).
This work considers a first order approximation to the dependability analysis of complex large scale installations.
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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