The phrase "a second important aspect" is correct and usable in written English.
You can use it when discussing multiple facets or components of a topic, emphasizing the significance of the second one.
Example: "In addition to the first point, a second important aspect to consider is the impact on the environment."
Alternatives: "another key point" or "a further significant element".
A second important aspect of the decision is its contribution to "the metadata debate" – whether data about communications deserves the same level of protection under law as the content of communications.
A second important aspect of satellite systems is the selection of suitable modulation formats and coding schemes, depending on the application scope.
A second important aspect is the consideration of several banks of filters that simultaneously estimate and integrate the neural sources of different models.
A second important aspect of the intermediate Wittgenstein's strong formalism is his view that extra-mathematical application (and/or reference) is not a necessary condition of a mathematical calculus.
A second important aspect of our approach is that the full performance capabilities of the hardware under consideration can be exploited by adding optimised application-specific operations to the HONEI libraries.
Furthermore, a second important aspect of the visuospatial sketchpad and phonological loop is that the representation within these mechanisms can be actively manipulated.
Other commentators have made both of these points, as well, but there's a third important aspect of the deal that hasn't been talked about much.
We take bandwidth into account as a third important aspect of cloud computing data centers.
A first important aspect has been the cleaning and correction of the incomplete and sometimes inaccurate dataset.
A third important aspect to consider is the patient's safety and the potential benefit-to-risk ratio of stem cell therapies.
A fourth important aspect of this study is the involvement of a diverse Stakeholder Panel, comprised of patients with knee OA, primary care and specialty physicians who treat patients with knee OA, physical therapists, and representatives of national organizations seeking to improve outcomes for people with OA.
