The phrase "a main primary" is not correct and is redundant in written English.
It can be used when trying to emphasize the importance of a primary element, but it is better to choose one term.
Example: "The main primary goal of the project is to improve efficiency."
Alternatives: "a primary" or "a main objective".
Isopropylmethylphosphonate was detected as a main primary phosphorus-containing product of the destruction of DIMP.
A main primary beam to bombard the target is 238U in the energy of 200 MeV/u with a maximum power of 400 kW, in which the beam power deposit on the target amounts up to 100 kW.
Surprisingly, not only did we observed a main primary gene dosage effect (23 three-copy genes genes out of 32) but we also identified for the first time a deletion in the Ts1Cje mice (see below).
As the initial focus of the intervention is on the management of depressive symptoms, we have considered the PHQ-9 as a main primary outcome, and will assess changes in PHQ-9 scores over 12-months between groups, adjusting for baseline PHQ-9 score, using a mixed effects multivariate model.
Thermal energy is at the heart of the whole energy chain providing a main linkage between the primary and secondary energy sources.
Disney Channel picked up the animated series Phineas and Ferb in 2006; Tisdale was cast as the voice of Candace Flynn, a main character whose primary motivation is getting her brothers in trouble.
Assessment and management of symptoms is a main task in primary care.
These enzymes carry demethyl-esterification of pectins, a main component of the primary cell wall.
A biologic vector can be classified as a main or primary vector or as an auxiliary or secondary vector, according to the transmission area it is associated with.
Providing chronic care (i.e. substitution, psychiatric comorbidities) in combination with acute somatic care is a main feature of a primary care setting.
Therefore, the rice inflorescence or panicle represents a determinate branched structure composed of a main spike bearing primary and secondary rachis-branches, lateral and terminal spikelets (Fig. 1A).
