The phrase "a concrete expression" is correct and usable in written English.
You can use it to describe a precise way of expressing a concept or thought. For example, "He used a concrete expression of his emotions during his speech."
The Hejaz Railway, financed by Muslim contributions from all over the world, was a concrete expression of his policy.
Palestinian elections present the Bush administration with the best opportunity to give a concrete expression of its declared commitment to pursuing both regional democracy and Palestinian-Israeli peace.
A concrete expression of the new foreign policy designated the Paasikivi-Kekkonen line was the Agreement of Friendship, Cooperation, and Mutual Assistance concluded between Finland and the Soviet Union in 1948 and extended in 1955, 1970, and 1983.
To help fulfill that dream, Mitra has established two sets of annual prizes in the Department of Economics with an $100,000 endowment, a "concrete expression of my continuing attachment to this great institution of learning," he said.
People looking for a concrete expression of America's waning influence point to its former consular building in the southern Thai city of Songkhla, which is now home to the Chinese consulate.
In this section, we will obtain a concrete expression of the Green function G ( t ).
He didn't want to give the face any concrete expression, but to make it give a feeling of a sort of universal force.
"I have given them a very concrete expression of interest that covered a multitude of factors," he said, speaking euphemistically.
It's a more concrete expression than the spoken word.
The ideal gift to commemorate this occasion would have been for the European Community to sign the Convention itself, as a very concrete expression of its commitment to childrens rights.
The sheer symbolism of Camp Bondsteel, the American headquarters, and the sophisticated Apache helicopters means a lot, Mr. Andrews said, as the concrete expression of a continuing American commitment to the safety of the ethnic Albanians.
