"proportional relation" is an accurate and properly written phrase that can be used in written English.
For example, "The proportional relation between the size of the building and the cost of its construction was very surprising."
Whereas in the past there had been something close to a one-for-one proportional relation between lost jobs and lost output, for every three percentage points of GDP that disappeared after 2008, only 1% of jobs went up in smoke.
where ∝ denotes the proportional relation.
The inverse proportional relation between the CH3OH concentration and flow velocity was presented.
An inversely proportional relation between the ISEE coefficient and the discharge voltage was found.
This approach for calculating JO parameters are particularly important since the proportional relation between absorption and emission intensities are considered.
It is assumed that there is a proportional relation between the sensitivity, degree of activation, and efficacy of a point.
Symmetry in either direction, however, did not result in any proportional relations to the aesthetic appeal.
The proportional relations between spatial and plane cable nets are firstly explored on the basis of projection principle.
It was found that linearly proportional relations are experimentally obtained between the compliance of the specimen and crack length for all three varieties of the TDCB samples.
By the means of obtained proportional relations, the analytical expressions between the mean spatial cable tensions and structural parameters of deployable reflectors including aperture, subdivision number and focal length are then derived.
Since the dependent variables were log-transformed and proportional, multiplicative models were adopted, and fixed effects are interpreted as allometric exponents, that is, proportional relations with the dependent variable.
