The phrase "are simply estimates" is correct and usable in written English.
You can use it when discussing approximations or rough calculations in various contexts, such as finance, project planning, or data analysis.
Example: "The costs provided in the report are simply estimates and may vary based on market conditions."
Alternatives: "are merely approximations" or "are just rough calculations."
Also certain parameters are simply estimated.
For rate-insensitive materials, these values can be simply estimated in closed-form.
The enthalpy wheel leaving air conditions can then be simply estimated by employing the practical effectiveness correlations.
Mega-bursts onsets and offsets were simply estimated by the first and last local minimum LFP value.
Consequently, both the dynamic response of the beam and the power transmitted to the plate can be simply estimated.
The case of one-sided repairs that is not supported against out-of-plane deformation is introduced within a context of geometrically linear analysis with a key stress intensity factor being simply estimated.
In our modified ART1, the vigilance parameter can be simply estimated by the data so that it is more efficient and reliable than Dagli and Huggahalli's method for selecting a vigilance value.
Moreover, the creep-ratcheting deformation with short peak holding time and small stress amplitude for PTFE gaskets can be simply estimated by the corresponding compressive static creep strain at the same peak stress in practical engineering with relatively good accuracy.
Unlike the previous works, where the TFPC/PC involved electrolyte was simply estimated at a certain volume ration and recognized as an unfavorable system, in this work, the physical properties of the electrolyte solutions with a series of volume ratios of TFPC/PC and their electrochemical performances in a graphite/Li cell and 5 V LiNi0.5Mn1.5O4/Li cell have been systematically studied.
The width parameter is simply estimated as w = Δv/3.
