The phrase "a concrete link between" is correct and usable in written English.
It can be used when discussing a specific, tangible connection or relationship between two or more entities, concepts, or events.
Example: "The study aims to establish a concrete link between diet and mental health."
Alternatives: "a solid connection between" or "a definitive relationship between".
Furthermore, public documents do not offer a concrete link between the bank's hiring practices and its ability to secure business deals.
If workers do not perceive a concrete link between their contributions to the system and the benefits they will someday receive, then the payroll tax will decrease their incentive to work, just like any other income tax.
No one has indicated that the children of Chinese officials helped the bank win business deals, and public documents do not offer a concrete link between the bank's hiring practices and its ability to secure deals.
And as the authors point out, it'll take more research to move these results beyond what they are now -- suggestive correlations -- to a more concrete link between proneness to depression and Neuropeptide Y. Here's a short related item on how hard it can be to pin down links between genes and susceptibility to depression.
The organization, which has 600 chapters across the country that provide food and shelter to disaster victims, has also added more tangible items like swimming lessons and blankets as gift choices to create a more concrete link between the donation and what it accomplishes.
Along the way, Jacka is taking blood tests to see if she can forge a more concrete link between components of the diet, levels of inflammation and oxidative stress, and the volunteers' ongoing symptoms.
But science has yet to establish or uncover a direct, concrete link between these two systems.
It's not uncommon to find apertures for exploitation, where a concrete link can be established.
But Dr. Bresnitz stressed that there was still no concrete link between Mrs. Lundgren and the letter to the next town.
Investigators have drawn no concrete link between the Madrid train bombings and attacks against five targets in Casablanca, Morocco, last May in which 47 people, including 12 suicide bombers, were killed.
There is no concrete link between Harris Media and Cambridge Analytica, though both have worked on the Ted Cruz and Donald Trump campaigns, as well as the Kenyatta campaign.
