1. Urimo ukoresha umutwe munini wa rivet cyangwa umwobo urenze?Birasabwa ko muri rusange aperture iba nini kuruta diameter yumubiri uzunguruka kuri 0.1-0.2mm, kandi umutwe wimbunda ugomba guhuzwa.
2. Ubwiza bwimpumyi zigomba gusimbuzwa imirongo mishya ihumye.
Igihe cyo kohereza: Nyakanga-14-2022