The phrase "comprises three phases" is correct and usable in written English.
You can use this phrase when you are referring to a process, project, or plan that has three distinct stages. For example, "The project comprises three phases: planning, implementation, and evaluation."
The strategy comprises three phases.
The proposed framework comprises three phases: parsing, formalization and evaluation.
The plan that was agreed comprises three phases: self-evaluation by plant operators; examination of the findings by national regulators, who then draft a report; then a peer review process by experts and others appointed by the Commission.
The protocol, termed CC ("double C", for clique clustering), comprises three phases, each designed to render the operations of the others swift and efficient.
In this study, we propose a novel approach to segmentation, the Real-time Unsupervised Segmentation (RUS) method, which comprises three phases.
The investigation of the phase structure revealed that the gel generally comprises three phases; the crystalline phase, noncrystalline amorphous phase, and crystalline amorphous interphase in a similar manner to the bulk crystals.
The diet comprises four phases: slimmers move from a pure protein "attack" phase, in which rapid weight loss occurs, to "cruise", which allows 28 selected vegetables on some days so that dieters reach their "true weight".
This concept comprises two phases: (1) establishing in situ coral nurseries for rearing large numbers of coral fragments; (2) their transplantation onto denuded reefs.
It comprises two phases, namely, product definition using the laddering technique and a novel design knowledge hierarchy (DKH), and product customisation using an integrated methodology of conjoint analysis (CA) and Kohonen association (KA) techniques.
This algorithm comprises two phases, the ad hoc discovery phase and the route establishment and data transmission phase.
Figure 1 shows the flowchart of MDORA, which comprises two phases: ad hoc discovery phase and route establishment and data transmission phase.
