The phrase "a parallel direction" is correct and usable in written English.
It can be used when discussing concepts, movements, or ideas that are aligned or moving in the same way or manner.
Example: "The two projects are progressing in a parallel direction, ensuring that they complement each other effectively."
Alternatives: "an aligned direction" or "a similar direction".
The individual silver dendrite is composed of a long central trunk with secondary branches, which preferentially grew in a parallel direction with a definite angle to the trunk.
The strongest and stiffest behaviour is found perpendicular to structure in low-porous banded samples, but in a parallel direction when the rock is highly porous.
РПЦ категорически против бородатых мужиков в платьях! pic.twitter.com/b1TLmsRI4s "Unfortunately, the legal and cultural spheres are moving in a parallel direction, to which the results of this competition bear witness".
Background and Objectives: A study using scanning electron microscopy showed that although the laminas forming the dura mater are concentric and parallel to the surface of the medulla, the fiber layers' orientations are different in each sub-lamina, dispelling the conventional knowledge that all the fibers of the dura are arranged in a parallel direction.
The samples, fabricated by a newly-developed normal incidence pulsed laser deposition (NIPLD) method have salient magnetic characteristics, different from particle-free samples of almost the same structure: (1) they exhibit biaxial magnetic anisotropies and (2) there exists a critical field at which the change in easy direction from a parallel direction to a perpendicular direction and vice versa.
The one-dimensional structures were densely packed, and each nanowire lay in a parallel direction.
The Love waves from the Kumamoto earthquake, arriving from an almost parallel direction to the Noto fault plane (of SW NE direction, dip angle of 60o Asano and Iwata 2011), would have a relatively high triggering potential on such faults, at shallow depth (Hill 2012).
Specifically, in Trpzip1, the side chain of Lys8 is oriented orthogonal to the β-hairpin axis so that it points straight outward, and away from the Trp hydrophobic cluster, whereas in Trpzip2, the same side chain points in an upright parallel direction with respect to the β-hairpin axis.
Butterfly wing samples of uniform size (15 mm in length and 10 mm in width, rectangular) were cut off from the black areas in a perpendicular and parallel direction to the ridge veins, respectively.
The electron source was assumed to deliver a gaussian energy spectrum, with parallel direction to the beam axis.
The indicated axes are b parallel to directions and a parallel to directions. it means that a 98% of the lattice mismatch is accommodated by the misfit dislocation network, consistent with the result obtained from moiré fringes.
