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Discover LudwigSuggestions(1)
The phrase "and the primary difference" is correct and usable in written English.
You can use it when comparing two or more items, highlighting the main distinction between them.
Example: "Both products are similar in many ways, and the primary difference lies in their pricing structure."
Alternatives: "and the main distinction" or "and the key difference".
Exact(2)
This application runs natively on iPhone devices and the primary difference from the previous Web applications is that the content is available for offline reading.
ZnO-I and ZnO-II samples were prepared from the same precursor using a very similar forced hydrolysis process, and the primary difference was the use of DEG versus denatured ethanol as the reaction solvent.
Similar(58)
Though differences can be wide and varied between both branches and traditions, the primary difference is that the Westernised forms use systematised hand-placements rather than relying on an intuitive sense of hand-positions (see below), which is commonly used by Japanese Reiki branches.
I have not driven the other two models, the Indian Chief and the Chieftain; the primary difference is body style and bags.
Dr Jack Callaghan, of the University of Waterloo, tells me that in his research on standing and back pain, the primary difference he sees between "pain developers" and "non-pain developers" is posture.
They are extremely similar in size and shape, with the primary difference being that the former has a white throat and the latter a yellow throat.
> -wrap-foot> The length and number of aligned regions was the primary difference in output between Mugsy, Mauve, and TBA in our evaluations.
The development of a database of addiction related genes is similar to existing methods and resources in the literature [15] [17], the primary difference being our development of a SNP database and a prioritization algorithm that allows the systematic supplementation of commercial SNP microarrays.
The three composite hydrofoils are all made of epoxy resin reinforced with the same nominal layup of carbon fiber reinforced polymers and glass fiber reinforced polymers, with the primary difference being the orientation of the structural carbon layers relative to the spanwise axis of the hydrofoils.
The connectivity profiles of rostral and caudal dAI were very similar; the primary difference was in the magnitude of correlation strengths, which were generally stronger for the c-dAI seed.
The primary difference between SOPs and GMPs is specificity.
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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