The phrase "are constantly low" is correct and usable in written English.
It can be used to describe a situation where levels or amounts of something remain consistently low over time.
Example: "The temperatures in this region are constantly low during the winter months, making it difficult for crops to thrive."
Alternatives: "remain persistently low" or "stay consistently low".
Results show that there was a concentration of C. cricetus in sown wildflower fields, while densities in adjacent agricultural fields were constantly low.
During other periods with no ash emission, the HCl/SO2 ratios were constantly low (∼0.02 in average).
Beyond 120° of wedge removal, which is one-third of the diameter of the radial head, the shear load was constantly low, indicating lower stability.
In our transcriptome data, both srbA and srbB showed an up-regulated trend during fermentation, but the expression level of srbA was constantly low, while srbB expressed in a high level from the beginning and increased dramatically during middle and late oxygen limitation phase, indicating SrbB has important roles in the transcriptional regulation in hypoxia fermentation of A. niger.
In rainbow trout exposed at the conventional and modified effluent at the WWTP Eriskirch, VTG levels in females varied between treatments (conventional and additionally treated effluent) and years (exposure in 2013 and 2014), whereas VTG levels in males were constantly low or even non-detectable (significant differences could not be determined) in both years (Fig. 2).
Their morale was constantly low, being effected by poor communication, slack discipline and a weak leadership.
There, we met General Bandal Bande who warmly greeted us and half jokingly told us that Kurdistan wished to be "America's 51st state". He told us that his war-weary troops were constantly low on ammunition, that they were in daily clashes with ISIS who killed his fighters with I.E.D. explosives or sniper rifles, and that the enemy had heavier weapons than his own soldiers.
The fractional excretion of uric acid (FeUA) was constantly low with values of 2-32-3%7%).
Necrotic cells were constantly low, indicating that these substances are not cytotoxic, at least at the concentrations used.
