This is the 13889th most frequent Turkish word.
makinelerinin
"Of the machines" or "machines'".
Here, "makinelerinin" indicates possession in the third person plural, referring to the machines that belong to the factory.
Fabrikanın makinelerinin bakımı düzenli yapılmalıdır.
The maintenance of the factory's machines should be done regularly.
In this sentence, "makinelerinin" describes the technology pertaining to computer machines, showcasing a plural possessive structure.
Bilgisayar makinelerinin teknolojisi her geçen gün gelişiyor.
The technology of computer machines is advancing every day.
Here, "makinelerinin" is used to relate the noise specifically to the train machines, using a plural possessive form.