reference orientation造句

Currently, most studies follow Darwin in assuming a Gaussian distribution of crystallite orientations centered on some reference orientation.
Flip it to the front view ( 90?), set the 1, 2-bond of the phenyl vertical to get the reference orientation.
Generalized and ordinary Procrustes analysis differ only in their determination of a reference orientation for the objects, which in the former technique is optimally determined, and in the latter one is arbitrarily selected.
In some contexts, such as identifying a point on a circle or describing the " orientation " of an object in two dimensions relative to a reference orientation, angles that differ by an exact multiple of a full turn are effectively equivalent.
In other contexts, such as identifying a point on a spiral curve or describing the " cumulative rotation " of an object in two dimensions relative to a reference orientation, angles that differ by a non-zero multiple of a full turn are not equivalent.
It's difficult to find reference orientation in a sentence. 用reference orientation造句挺难的