"primary and secondary" is correct and can be used in written English.
For example, "Primary and secondary schools in the city have begun implementing a new remote learning policy."
In our sample, 15.7 % of multiple job holders work in the same detailed occupation in their primary and second jobs (not shown in Table 1).
Its caudal portion and splenium contain fibres that originate from the primary and second auditory cortices, and from other auditory responsive areas.
For the glass ceramics with 17 mass% Na2O (B), the primary and second phases are β-CaSiO3 and Na2Ca2Si3O9 in the range of 750 °C 950 °C, respectively.
The effect of treatment at 1 year compared to baseline was done with a Wilcoxon test for paired samples (two-sided, type I error rate = 5%) on primary and second outcomes.
It is not uncommon to find micro – primary and second primaries occupying cryptic sites (such as the base of tongue or tonsillar crypts) following additional diagnostic work-up in HNC.
Here, we show that NTG injection induces a further amplification of primary and second order neurons activation, as demonstrated by c-Fos mRNA levels in TG and in central areas compared to CT group.
The Berkshire council wants to increase primary and first school places by 15 per year group.
Mesio-distal crown width (CW), enamel and dentin thickness and pulp chamber dimensions were measured on standardized bitewing radiographs of mandibular second primary and first permanent molars.
"In breaking news situations, users turn to television as their primary and first device (42%), with the majority (66%) then turning to the internet to investigate stories further.
As for teachers with the titles of first grade primary, second grade primary, and third grade primary, from 2006 to 2010, the ratio in urban areas was four to five times higher than that in rural areas; the figure even reached above seven times by 2011 (see Table 6).
The primary and third aspheric mirrors act as deformable mirrors to realize the transition among the different focal lengths by the curvature radius variation, while the second aspheric mirror is static.
