The phrase "a fundamental phase" is correct and usable in written English.
It can be used when discussing a crucial stage or period in a process, development, or system.
Example: "Understanding the basic principles is a fundamental phase in mastering any new skill."
Alternatives: "a critical stage" or "an essential step".
Yesterday there was a master class at the line-out from Victor Matfield which denied England ball from a fundamental phase of play.
Pilot studies represent a fundamental phase of the research process.
The curriculum is divided into a fundamental phase and a customized phase.
Cleaning is a fundamental phase of the conservation and maintenance activity of the cultural heritage.
Cleaning is a fundamental phase of the conservation and maintenance activities of the Cultural Heritage.
Comparatively, the FMI has the smallest volume in the composite body, but it is a fundamental phase to provide composite resins with satisfactory properties [2 4].
During the fundamental phase, students take core classes and work with career coaches.
Fundamental phase equilibrium relationships suggested use of conventional, extractive, and heterogeneous azeotropic distillation units to perform the separations.
The study is divided in three fundamental phases: critical analysis of the FMECA model, proposal and development of the PC-FMECA and presentation of an implemented case study in the automotive field.
The three fundamental phases of matter are solid, liquid, and gas (vapour), but others are considered to exist, including crystalline, colloid, glassy, amorphous, and plasma phases.
The five organs of the body and its orifices and the dispositions, features, and passions of humans correspond to the five directions, the five holy mountains, the sections of the sky, the seasons, and the Five Phases (wuxing), which in China are not material but are more like five fundamental phases of any process in space-time.
