The phrase "a key means" is correct and usable in written English.
It can be used to indicate an important method or way of achieving something.
Example: "In our research, we found that collaboration is a key means to enhance productivity and innovation."
Alternatives: "an essential method" or "a crucial way".
Amplitude demodulation is a key means of diagnosing bearing faults.
International mail is a key means of furthering economic, social, and cultural links between nations.
Education has been considered a key means of changing people's risk perception of or attitude toward, nuclear technology.
These encouraging results demonstrated that manifold diffusion is a key means to enable accurate computer-aided diagnosis of renal lesions.
This book provides a comprehensive assessment of the emerging legal and policy frameworks for managing forests as a key means to address climate change.
Pompeo also discussed energy independence, the statement said, a strategy the Trump administration sees as a key means of countering Iranian influence in Iraq.
E-portfolios are progressively becoming a key means for students to integrate their learning across the entire length of their program.
Model-Based Security Engineering (MBSE) could be a key means to tackle this challenge via security by design, abstraction, and automation.
Current research on Bt cotton in developed countries has revealed that this transgenic crop provides a key means for enhancing yields and boosting profits.
It has emerged as a key means of interpreting paleosols; records of metastability in landscapes when rates of erosion and accumulation are slow.
Widespread literacy in Europe and America centered around multiple forms of popular culture: "broadsheets, ballads, and political tracts provided a key means for political discussion and recreation…" (p. 24).
