The phrase "a key method of" is correct and usable in written English.
It can be used when discussing an important or essential technique or approach in a particular context, such as research, education, or problem-solving.
Example: "Collaboration is a key method of enhancing creativity and innovation in the workplace."
Alternatives: "an essential approach to" or "a crucial technique for".
The distribution map of artifacts, especially when studied against the background of the natural environment, is a key method of archaeological study.
More than two-thirds of survivors of domestic abuse have reported their partners withheld money from them as a key method of controlling and mistreating them, according to the Women's Aid report, The Economics of Abuse.
Cognitive overload has been recognized as a significant cause of error in industries such as aviation, and measuring mental workload has become a key method of improving safety.
But we don't have the habit, you see, of hearing ourselves…" Starting even before the release of "Breathless," Jean-Luc Godard made use of his eloquence in interviews as a key method of establishing his public persona (and thus sustaining a career even in the face of failures at the box office), and this was unusual.
Unlocking means taking a phone from one provider to another, and unlocking is a key method of competition in the wireless industry.
Percutaneous pinning remains a key method of surgical fixation for Colles' fractures.
TEM has been found to be a key method for the characterisation of various types of nanomaterial in the size ranging from 10 nm to 1 μm.
Proteomics is a key method for advancing our understanding of biological processes and systems.
As with the previous section, visualization is a key method for discerning the properties of the data.
Structural brain imaging is assumed to be a key method to elucidate the underlying neuropathology of bipolar disorder.
To minimize potential reference bias and also identify conformational heterogeneity, multivariate statistical analysis (MSA) is a key method utilized for the classification of subtomograms.
