The phrase "are unsuitable for large" is grammatically correct and can be used in written English.
It can be used when discussing items, conditions, or situations that do not meet the requirements for larger sizes or capacities.
Example: "These shoes are unsuitable for large feet, as they only come in small and medium sizes."
Alternatives: "not appropriate for large" or "inappropriate for large".
These approaches may be effective for informing vehicles in a small range, but they are unsuitable for large-scale broadcasts because each message has fixed transmission range and is relayed separately.
Current physical and/or chemical methodologies are effective for decolorization of wastewater, but these methods are unsuitable for large-scale use, owing to their high cost, low efficiency, and poor adaptability to a wide range of pollutants (Waghmode et al. 2011).
They are also prone to desiccation, are labour intensive, season dependent and have a low survival rate, and therefore are unsuitable for large-scale plantations (Islam et al. 2011; Razvi et al. 2011, Mudoi et al. 2013, Singh et al. 2013).
However, current methods for intravital diagnosis of prion disease rely on invasive tissue biopsies and are unsuitable for large-scale screening.
Such approaches are unsuitable for large-scale investigations, which demand a less labour-intensive and more objective focus.
Multi-dimensional behavioral rating scales like the CBCL and YSR are available for diagnosing psychosocial maladjustment in adolescents, but these are unsuitable for large-scale usage since they are time-consuming and their many sensitive questions often lead to missing data.
I had been told by authoritative sources that the acoustical arrangements that were so successful at Mr. Szell's concert would be preserved, but either this did not turn out to be the case or the Thursday night arrangement proved to be unsuitable for large choral works with vocal soloists.
Whereas RT PCR interrogation of archival FFPET has proven to be a reliable tool and is widely used (Cronin et al, 2004), this approach is unsuitable for large scale discovery-based investigation owing to the limited number of genes that can be assayed in one experiment.
The property, Trinity said, is unsuitable "for large-scale assemblies or encampments".
However, this system was unsuitable for large-scale production because of its complexity and low productivity.
