The phrase "a simple expression to" is correct and usable in written English.
It can be used when introducing a phrase or statement that conveys a straightforward idea or concept.
Example: "Here is a simple expression to describe the process: 'Practice makes perfect.'"
Alternatives: "a straightforward way to" or "an easy phrase to".
As part of this paper, a simple expression to determine SFR-RPC bearing capacity is proposed.
Here we have derived a simple expression to relate faradaic pseudo-capacitance, CF, determined by electrochemical impedance spectroscopy to the electrochemically active surface area (ECSA) of Pt electrocatalysts.
Existing modeling work either uses oversimplified assumption of pressure distribution in the coating bead, or does not provide a simple expression to predict the penetration depth and often requires a complex calculation procedure.
This approach combines the wave Reynolds number, wave steepness and relative depth to provide a simple expression to assist assessments of coarse sediment transport by waves for uses within a range of practical engineering applications.
As in the "Turangalila Symphony," which came soon after, Messiaen feels no shame in giving simple expression to simple joys.
It is possible to derive a simple expression status (expressed or not expressed) for conditions or tissues, for which multiple data-sets are available.
The proposed methodology defines a simple expression which allows to estimate the failure pressure using only the elastic properties of materials.
In this paper a simple expression is derived to estimate the flame jet width and flame jet velocity of burnt gases of a free flame after expansion over the flame front for the special case of plug flow in and above the burner.
C09D4.1 had a simple expression pattern limited to intestinal cells in all developmental stages (Fig 5).
In geomagnetism, once the Gauss coefficients are known, it has been usual to calculate the external field using the corresponding scalar potential (16) but there does not seem to have been a simple expression enabling the Gauss coefficients to be derived by the volume integration over an arbitrary current distribution.
Let us give just a simple expression of this process to illustrate our set-up, with only one process.
