The phrase "lower than required" is correct and can be used in written English.
It is used to describe a result that did not meet the expected or accepted standard. For example, "The test results were lower than required and the students had to retake the exam."
We analyze why the amount of hydrogen adsorbed in all known materials is much lower than required for mobile applications and what are possible strategies to increase it.
The binding of lipopolysaccharide (LPS) with LBP and sCD14 activates macrophages at LPS concentrations up to 1000 times lower than required with LPS alone.
Cellulase complex used for commercial biomass hydrolysis is mostly derived from Trichoderma sp. and contains β-glucosidase <1% of total proteins, a ratio much lower than required for optimum saccharification.
The hybrid biomaterial enhanced significantly bone regeneration in a rat critical-size femoral defect model using BMP-2 amounts that are one order of magnitude lower than required for healing in this animal model.
The use of the BFA and BBA lead to a small decrease of the compressive strength, however they can exhibit very low permeability and water absorption values, lower than required by the specifications (close to 5%).
The estimated rate is obviously lower than required.
While Judge Shipp gave the former mayor a lower sentence than required, he said he imposed the fines and community service to send a message.
Nonyl-4-pyridine carboxylate at lower concentrations than required with tributylphosphate resulted in faster nickel stripping and extraction when using LIX 63/Versatic 10 without impacting nickel extraction pH.
The assay could detect the toxin at a far lower level than required by the World Health Organization for regulation of microcystin-LR or its equivalent (1 μg/L).
It doesn't take a math major to see that we're graduating students at a far lower rate than required to meet demand.
Furthermore, an average RMSD of 14 Å, if applicable to the entire complex implies a much lower precision than required to annotate general secondary structure elements.
