The phrase "two major dimensions" is correct and usable in written English.
It can be used when discussing aspects or factors of a topic that are significant and can be categorized into two main areas.
Example: "The study focuses on two major dimensions of consumer behavior: motivation and perception."
Alternatives: "two key aspects" or "two primary factors".
Novelty seeking (NS) and harm avoidance (HA) are two major dimensions of temperament in Cloninger׳s neurobiological model of personality.
As such, they developed and validated a customer value co-creation scale, including two major dimensions: Customer participation behavior and customer citizenship behavior, with each dimension composed of four components.
These results also reveal that distinct neural substrates may underlie the two major dimensions of the attachment construct in healthy adults (anxiety and avoidance, as defined by self-report measures used here).
The SF-36 was constructed to represent two major dimensions of health – physical and mental.
However, the results question whether the actual variations in parenting in Norway can be adequately reflected by only these two major dimensions.
Social support provided by family members has two major dimensions: structural and functional support (Chen and Silverstein 2000; Silverstein and Bengtson 1997).
Terracciano, A. et al. Genome-wide association scan for five major dimensions of personality.
Moreover, I have identified three major dimensions shared by compacts in all companies.
Factor-analytic studies of the internal structure of the TAS reveal six major dimensions of absorption.
The developmental interest in these personality traits is that they define four major dimensions of temperament in children.
A multivariate factor analysis identified five major dimensions (or axes) that conveyed over 80% of the total variation of the original 30 development measures.
