The phrase "a preliminary reflection" is correct and usable in written English.
It can be used when introducing an initial thought or consideration on a topic before delving deeper into analysis or discussion.
Example: "In this paper, I will provide a preliminary reflection on the impact of climate change on global agriculture."
Alternatives: "an initial consideration" or "a first thought".
Because CS experiments represent a huge investment in terms of economics and time, preliminary reflections of the relevance of the experimental strategy is of critical importance.
See, e.g., Stephen M. Bainbridge, Director Primacy in Corporate Takeovers: Preliminary Reflections, 55 STAN.
Fresh off being fitted for a funeral suit, Mr. Simpson admitted that he was "still processing" the news, but managed some preliminary reflections about what this new spotlight could mean for his career, while also floating a pretty good reason he could miss the Grammy ceremony, on Feb. 12.
Strine and Chancellor Chandler did their part to make Delaware's case by writing "The New Federalism of the American Corporate Governance System: Preliminary Reflections of Two Residents of One Small State" just months after SOX became law.
Other books explaining and defending Christianity include Miracles: A Preliminary Study (1947), Reflections on the Psalms (1958), and The Four Loves (1960).
We present here a succinct reflection and a preliminary consideration on a poorly-researched and misunderstood historical event occurred at Mexico City in 1562: the proposal of unify all urban political corporations in one cabildo at likeness the twenty-four inter-ethnic regiments present in the Spanish city council of Granada.
As a preliminary test of the apparatus, the reflection profile of a Mo/SiO2 multilayer mirror prepared by an ion beam sputtering technique, which is designed as a reflection polarizer for use of 13.9 nm, has been measured by the apparatus.
At the initial workshop, presentation of a preliminary programme draft helped to promote reflections and discussions.
In a preliminary report, its leader, an Angolan, declared the poll a credible reflection of the voters' wishes even before the first results had been declared.
