3 adjectives to describe technicians

Helen Seitter Stocklen (C); 11Feb71; R500939. SELL, LEWIS L. Practical polyglot technical lexicography and the professional polyglot technician.

End-of-course test in Automobile electrical technician for the United States Armed Forces Institute course no.733.

We could develop a corps of socially responsible technicians as we have developed a corps of competent scientists and technicians in the field of natural science.

3 adjectives to describe  technicians