The phrase "closely combined" is correct and can be used in written English.
You might use it when referring to two or more items that are connected, united, or closely associated with each other. For example, "The ingredients are closely combined to create a unique flavor."
The hard segments of polyurethane and epoxy resin were closely combined through the DA reaction and high density hydrogen bonding.
In a traditional view, the cocatalyst should be closely combined with the photocatalyst to achieve a high H2 or O2 photo-productive rate.
Thus, the sacred meal has been at once a sacramental communion and a sacrificial offering (e.g., wine, bread, or animal as a sign or symbol of a divine death and resurrection for the benefit of man) in which the two fundamental and complementary rites have been closely combined throughout their long and varied histories.
The interface treated with aluminate coupling agent, although the boundary between transparent resin and cement matrix still exists, but the micro cracks caused by the sampling process is almost disappeared, and two substances are closely combined together to present a natural transition state.
The intelligentization of shape control technology needs to be closely combined with the industrial internet of things, big data, artificial intelligence and cloud computing technologies.
Market transaction and power operation characteristic are closely combined Decentralized trading EU countries The spot and equilibrium markets are decentralized organizations.
In their work, they closely combine search and practice.
Theoretical and practical phases alternate, with the intention of closely combining theoretical and practical knowledge.
An important feature of vector analysis is that it can closely combine the geometric ideas with algebraic calculations.
The aspect of the Microsoft case that most closely combines law and technology, Professor Gavil said, is whether Microsoft's bundling of its Internet browser with its Windows operating system was an illegal tying arrangement.
Elizabeth I is typically portrayed as a woman buffeted between duty and passion; at its best, this HBO two-part miniseries suggests how closely she combined the two.
