This is the 5591st most frequent Russian word.
постоянных
"Постоянных" translates to "constant" or "permanent" in English.
In this sentence, "постоянных" is used as an adjective describing "обследований" to mean "constant," indicating that regular and continuous examinations are necessary.
Эти симптомы требуют постоянных обследований.
These symptoms require constant examinations.
Here, "постоянных" describes "посетителей," implying that the person frequently visits the cafe, making it a routine or habit.
Он один из постоянных посетителей этого кафе.
He is one of the regular visitors to this cafe.
In this context, "постоянных" modifies "финансовых вложений," indicating the need for continuous financial support for the project.