This is the 2608th most frequent Russian word.
технических
The Russian word "технических" means "technical" (adjective, genitive plural or genitive singular feminine form).
In this sentence, 'технических' describes 'неполадок' (issues), indicating that the issues pertain to technical aspects or matters.
Секрет успешного концерта заключался в устранении всех технических неполадок.
The key to the concert's success was eliminating all technical issues.
Here, 'технических' modifies 'наук' (sciences), specifying that the sciences are of a technical nature.
Я записался на курс технических наук в университете.
I enrolled in the course of technical sciences at the university.
In this example, 'технических' is used to qualify 'процессов' (processes), signifying that the processes are related to technology or engineering.