The phrase "difficult to decompose" is correct and usable in written English.
You can use it to describe something that is challenging to break down or analyze. For example, you could say: "The complex university course was difficult to decompose."
Particularly, Pb and U were difficult to decompose, at least at the dose levels allowed by radiation source and safety requirements.
In fact, polyphenols are difficult to decompose.
In the SSA example, each worker performs a unit of work that would be difficult to decompose, and satisfactory performance is within the capability of existing hardware.
The removal of organic pollutants and dyes from industries remain as a challenge as these dye molecules are difficult to decompose.
The spectral region between 700 and 900 cm-1 is more difficult to decompose, given the number of overlapping components with close frequencies.
While this measure allows to gauge the curvature along many occupation groups, it is difficult to decompose it in a meaningful way.
Motifs act as fingerprints of more complex systems, and although it is in practice difficult to unambiguously decompose large systems into a collection of motifs, the distribution of motifs is unique enough to differentiate structurally and dynamically different networks (Milo et al. 2004 , 2002 McDonnell et al. 2014).
This intensity was selected because it has been shown to approximate the total population of MUs available [ 15], participants had difficulty maintaining higher intensity levels for the required 30 s and because the complex interference pattern generated at higher intensities is difficult to accurately decompose and may under represent smaller MUs [ 16].
Due to their chemical stability, once they get accumulated in the bodies, it is difficult for them to decompose [6].
However 4-NP was difficult to be decomposed or mineralized.
While, in alkaline condition, the dye molecule exists in azo formula, which is firm and difficult to be decomposed [1].
