The phrase "a partial filling" is correct and usable in written English.
It can be used in contexts where something is not completely filled, such as in discussions about containers, forms, or processes.
Example: "The jar had a partial filling of jam, which left some space at the top."
Alternatives: "an incomplete filling" or "a partial amount".
A partial filling in solution was obtained with uranyl nitrate, in order to evidence the opening of carbon nanotubes.
We bring evidence that the encapsulated C60 molecules strongly modify the electronic band structure of semiconducting nanotubes in the vicinity of the charge neutrality point, including a rigid shift and a partial filling of the energy gap.
The microstructure of the hardened paste after 7 days of hydration displayed the formation of nearly amorphous and microcrystalline CSH products as well as rod-like crystals of ettringite with a partial filling of the available pore spaces of the hardened paste.
The globular aspects observed on some microCT images may represent a partial filling of these systems.
Depletion of RSC results in a partial filling in of the nucleosome-depleted region upstream of promoters (Hartley and Madhani, 2009), consistent with a role in nucleosome removal.
Fractional-charge transfer (FCT), characterized by a partial filling of the frontier orbitals of all adsorbates, has been repeatedly reported for a variety of molecules on atomically clean metal surfaces.
I'm not even sure what a let really is in tennis, and I sure didn't like it as a partial fill-in-the-blank.
We obtained a stable time-averaged thrust in a wide range of operation frequency (40 160 Hz) and confirmed the increase of specific impulse due to a partial-fill effect.
Finite element modeling of hollow and concrete-filled fiber composite tubes: Part 2 Optimization of partial filling and a design method of poles.
Partial filling is proposed as a low-cost alternative to using thicker-walled tubes, to enhance flexural strength and stability.
For well-2B, the meander section of the outer S3 sequence channel complex was drilled, so the core only represents a partial sedimentary filling sequence.
