The phrase "a main field of application" is correct and usable in written English.
It can be used to refer to the primary area or domain where a particular concept, technology, or method is applied.
Example: "Artificial intelligence has a main field of application in healthcare, where it is used for diagnostics and patient management."
Alternatives: "a primary area of application" or "a key field of application".
Because of its main field of application as a flat slab, the punching shear capacity is one of the most interesting properties of this slab.
The main field of application of the present protocol is in cognitive neuroscience complementing behavioral studies that use TMS to induce transient, 'virtual lesions'.
But as traditionally the main field of application lies in high-frequency telecommunication, SAW devices are only marginally optimized for microfluidics, especially in respect to an energy efficient operation.
The main field of application of BRABENDER® food instruments is the milling and baking industries where these instruments are used for testing the quality and properties of grain, flour, and dough in order to ensure good and constant quality of products like bread, biscuits, pastries, or noodles.
Overall, CNTs can be viewed as a revolutionary tool that will advance the practice of medicine, imposing expectations that biomaterials will be the main field of application of CNTs.
Although geoscience is still the main field of application of LA-ICP-MS, its use in the fields of environmental research and life sciences increased continuously during the last few years.
The main field of application of this technique is the screening of postsurgical patients, to distinguish residual/recurrent disease requiring second-look surgery from postoperative fibrosis not requiring surgical revision.
The main field of applications are printed electronics, organic electronics and tissue engineering, and the most promising short terms ones concern digital laser printing of sensors and conductive tracks.
One of the main fields of application of FRC can be found in blast-protective or blast-resistant concrete structures.
In this paper we derive the asymptotic convergence rate of IFT for disturbance rejection, which is one of the main fields of application.
Figure 1 Analysing paradigmatic fit: expected effects of the strong intellectual property paradigm and partially open innovation in the main fields of application of plant improvement (figure by authors).
