The phrase "absorption must be" is correct and usable in written English.
It can be used in contexts discussing the necessity or requirement of absorption in various fields, such as science or education.
Example: "In order for the process to be effective, absorption must be optimized to ensure maximum efficiency."
Alternatives: "absorption is required" or "absorption needs to be".
However, due to its small molecular weight and large vapour pressure absorption must be carried at low temperature to minimise ammonia loss.
In order to prepare an effective neutron shielding material, not only neutron but also gamma absorption must be taken into account.
These results indicate that little HMB escapes ruminal degradation through passage to the omasum and that the site of HMBi absorption must be preomasal.
In 1908 German physicist Johannes Stark realized that absorption of radiation was a consequence of a quantum transition, and this was further extended by German physicist Albert Einstein in 1912 to include the conservation of energy the internal energy introduced to the molecule by absorption must be equal to the total of the energies of each individual process of energy dissipation.
To simulate moving sound sources which cover large distances, effects due to air absorption must be taken into account.
Although the relationship between models of in vivo absorption and the everted gut sac model of in vitro absorption must be further elucidated, we expect our results to contribute to the development of methods for determining the absorption of silica particles after oral exposure.
Since acrolein and ethylene absorption lines overlap and 1,3-butadiene, ethylene and propylene absorption lines overlap, the per puff deliveries of ethylene and propylene were determined since their overlapping absorption lines must be taken into account by the spectral fit.
In contrast, a complex dependence on the radiation absorption rate must be taken into account, as very different radiation conditions may coexist inside the photoreactor, with high absorption rates in the region near to the radiation entrance window and much lower values on the opposite side of the photoreactor.
To accurately measure the concentrations of atmospheric gasses, especially the gasses with low concentrations, strong absorption features must be accessed.
Usually the liquid is an organic solvent of high boiling point; however, after VOCs' absorption it must be regenerated for the possible reuse and this step is classically achieved by heating the liquid.
However its adverse effect on constantly changing the CO2 absorption rate must be carefully considered.
