The phrase "are usually fragmented" is correct and usable in written English.
It can be used to describe something that is typically broken into parts or pieces, often referring to information, thoughts, or narratives.
Example: "The reports we receive from the field are usually fragmented, making it difficult to get a complete picture of the situation."
Alternatives: "are often incomplete" or "tend to be disjointed."
Metropolitan areas are usually fragmented into several governments that are occasionally (in the U.S). not even incorporated.
However, these services are usually fragmented in ways that reduce their effectiveness in supporting family life, healthy child development, and the transition to school.
In the cerebellum, the dentate nuclei are usually fragmented, Purkinje cells are reduced in number in the cerebellar cortex, heterotopically located in the cerebellar white matter and arranged in small clusters or in streaks intermingled with hypoplastic deep cerebellar nuclei.
Moreover, school science is usually fragmented in different, strictly isolated disciplines, and/or presented in contexts of limited interest for students, thus failing to provide students with a coherent picture (Siegel and Ranney 2003).
Since RepeatScout is tailored to analyze complete genomes or at least large scaffolds, its output is usually fragmented when the program is run on random sheared reads.
With such samples the protein sequences are usually fragments and the source organism is unknown.
Specialized cells called dendritic cells have a central role in bringing the antigens which are usually fragments of the infectious agents that have invaded the body to the T cells.
To obtain information beyond the compound mass, the analyte is usually fragmented, and fragment masses are recorded.
Our analysis is mainly based on EST/cDNA sequences, which are usually local fragments of full-length gene transcripts, so correlation between distant cassette exons is out of the scope of this study.
Closings are usually sentence fragments, not full sentences.
The 3' terminal parts of fungal chimeric retroelements are usually composed of 3' fragments from MGL LINE retrotransposon.
