The phrase "are defined by specific" is correct and usable in written English.
It can be used when describing characteristics or criteria that determine the nature of something.
Example: "The parameters of the study are defined by specific guidelines set forth by the research committee."
Alternatives: "are characterized by particular" or "are determined by specific".
Woisio has a number of channels called "stages", that are defined by specific arenas of interest and location.
We exclude genres that are defined by specific rhythm patterns and singing style, e.g., waltz and hip hop.
The unsupervised analysis clusters together with remarkable precision sequences belonging to the same datasets, indicating that the integration sites of different vectors are defined by specific patterns of flanking TFBS motifs.
The different toxins are defined by specific antisera that are not cross protective.
Here we hypothesized the existence of a set of FFLs in CF where the two regulatory elements are defined by specific TFs and miRNAs, respectively.
Institutions are relevant to programmes for older people since they are defined by specific relationships – in particular those they establish between providers and clients (and the wider community).
Instead, the importance and impact of social media on each of the rebellions we have seen this year has been defined by specific local factors (not least how people live their lives online in individual countries and what state limits were in place).
Indeed, according to their report, an atypical fracture is defined by specific major and minor features [48].
They also need to know exactly what credit quality risk they have as well, and a portfolio that is defined by specific issues assists in this category.
Up to now ALs have tended to be defined by specific formulae (e.g. Fibonacci, Cantor), and theories have neglected other useful ALs along with the vast majority of non-useful (random) ALs.
B2C Markets: Ultimately, a B2C market is defined by specific customer segments.
