Exact(2)
It is not exactly news that it was the introduction of Apple's iPhone in 2007 — followed by smartphone competitors that used Google's Android operating system — that turned the BlackBerry from a dominant to a marginal device.
I think that the company is profitable on a marginal device basis, but the larger Surface expense set yet outstrips its incomes.
Similar(6)
The marginal improvement in the device efficiency with QDs is largely attributed to the non-radiative recombination, low QD absorption volume, and low optical transition rate [34].
One of the most important elements in evaluating a fixed prosthodontic device is marginal accuracy.
Hockey was abandoned to its own devices, a marginal sport: the Party poured its resources into soccer and track and field, while hockey was left out on a lonely, happy iceberg of its own.
Jobs that made no or marginal use of digital devices 10 years ago now tether workers to their machines as closely as today's students are glued to their smartphones.
In case of UASB reactor, this decrease was marginal because addition of GLSS device significantly improved (14%-20%) the overall efficiency of the UASB reactor.
Products with high marginal costs, such as hardware devices or where significant customer service or customer acquisition costs are involved, typically don't work as freemium businesses.
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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