The phrase "as the primary element" is correct and usable in written English.
It can be used when discussing the main or most important component of a particular context or subject.
Example: "In this analysis, we will focus on the data as the primary element influencing our conclusions."
Alternatives: "as the main component" or "as the key factor".
Gabriel Shanks, the executive director of the Drama League, described the move as the primary element in a "wholesale transformation" of the group, founded in 1916.
Thus, Fe eluted from SMS is considered as the primary element controlling microalgal growth.
In particular, Si is the leading semiconductor, and its unlimited abundance makes it as the primary element for the future applications.
To conceptualize the system we have just described, consider the flux-pumped SQUID as the primary element of a multi-frequency circuit.
The deterioration of the mechanical properties of yield strength and modulus of elasticity is considered as the primary element affecting the performance of steel structures under fire.
The results presented in this manuscript can provide a useful guidance for the study and design of next generation of nanodevices that make use of the thermal vibration properties of a monolayer graphene as the primary element.
Thus the Gulf Stream, and hence the wind, rather than being minor features of oceanic climate are best regarded as the primary elements.
Chiptune is a genre of pop music that uses eight-bit sounds, sometimes from old video-game consoles, sometimes from synthesizers set to emulate those consoles, as the primary elements in the creation of new songs.
Bundle theorists tend to take phenomenal contents as the primary elements in their bundle.
We conclude that digital photographs cannot replace traditional herbarium specimens as the primary elements that document tropical plant diversity.
A sophisticated regulatory process between chloroplasts and nuclei is required to fine-tune chloroplast gene expression, and many nuclear-encoded RNA-binding proteins (RBPs) have been recently regarded as the primary elements that modulate posttranscriptional steps in chloroplasts [ 2, 4, 6, 7].
