This is perhaps because only 5–10% of items in a technical document are terminology, while the other 90–95% of the text is language, most likely in a natural style of the source language.
Arvatavalt seetõttu on tehnikadokumentides ainult 5–10% ulatuses terminoloogiat, ülejäänud 90–95% ulatuses tekstist, on keel pigem lähtekeele stiilis.