The phrase "a much lower mass" is correct and usable in written English.
It can be used when comparing the mass of one object or substance to another, indicating that it is significantly less.
Example: "The new model of the spacecraft has a much lower mass, allowing for greater fuel efficiency."
Alternatives: "a significantly reduced mass" or "a considerably smaller mass".
In that case, the second Z (further to the right) has a much lower mass.
An M-class dwarf star such as Gliese 581 has a much lower mass than the Sun, causing the core region of the star to fuse hydrogen at a significantly lower rate.
The visual light output is again due to radioactive decay being converted into visual radiation, but there is a much lower mass of nickel-56 produced in these types of explosion.
These forms differ quite considerably in some proportions (particularly around the head and neck) and more applicable scaling of Q. northropi from other, completely known azhdarchids produces a much lower mass estimate.
The moderate-level challenge, which still employs a much lower mass concentration than in conventional animal models of allergic airway inflammation, triggers rapid and enhanced accumulation of eosinophils and neutrophils around intrapulmonary airways, similar to that seen in clinical acute exacerbations [ 13].
Rather than a single impact from a massive, Mars-sized world in the early Solar System, a much lower-mass but still high-energy collision could have given rise to our Moon.
The low viscosity and the high diffusivity of a mobile phase at high temperatures produce much lower mass transfer resistance; in addition, organic solvent consumption may also be reduced, which is consistent with the principles of "green" chromatography.
Randomly packed fiber bundles have much lower mass transfer coefficients than regularly packed fiber bundles.
In these two samples, although 3H was present at much lower mass concentrations than 14C, its radioactivity levels were similar to 14C.
The nanopowder exhibits much lower mass distribution values, however, due to few particles in the size range over 1 μm.
In particular, peaks derived from the parent masses of overlapping peptides may be set to much lower mass tolerances than peaks from fragment masses.
