The phrase "substantially constant" is grammatically correct and can be used in written English.
It is typically used to describe something that remains mostly unchanged or stable over a period of time. It is often used in technical or scientific contexts. Example: The temperature in the room remained substantially constant throughout the experiment, with only slight fluctuations observed.
An induction machine can operate as a generator if it is connected to an electric supply network operating at a substantially constant voltage and frequency.
We confirmed that the electrode maintain substantially constant amount of oxygen in a wide A/F range of 10.5 30.
A coil or a leaf spring retains a substantially constant rate within its operating range of load and will deflect 10 times as much if a force 10 times as great is applied to it.
However, due to the surface aging effects, the interlaminar shear strength decreased sharply in the first few days and then, after 10 days, remained substantially constant.
Hertzian failure and main failure thresholds of a composite laminate with a particular thickness remain substantially constant with the nominal and incipient impact energies.
(One rule of thumb is that the coefficients of a quasi-time-invariant filter should be substantially constant over its impulse-response duration). Nonlinear filters generally create new sinusoidal components at all sums and differences of the frequencies present in the input signal.
Results have shown a significant increase of the ALP activity of PA42-C4 induced on PCL film from 14 days of induction, reaching a maximum value up to 21 days, correspondent to 41,53 μU/ μg DNA with an increase of 7355% with respect to time 0. This increase substantially remained constant at 28 days and then decreased after 35 days of induction.
Further, we have prepared the fluorinated copolybenzoxazine (B-a/F-1=1/1) with substantially reduced dielectric constant at K=2.36.
Three numerical experiments that are specifically designed with different DM settings reveal that the meridional overturning circulation (MOC), temperature and salinity in the Atlantic change substantially when the constant background DM is replaced with Argo-derived mixing.
Metallurgic sector instead has substantially maintained quite constant its consumption (about eight Mtoe) [1].
The second phase of the 500 nm absorbance decay occurs with a substantially slower time constant of 0.5 s, returning the remaining 20% of initial absorbance change.
