I-Lianggong Trench Box Thumela phesheya kwezilwandle

I-Lianggong trench ibhokisi lokuthumela phesheya kwezilwandle

Ibhokisi le-Trench lenzelwe ngokukhethekile ukwesekwa okunqenqemeni ngesikhathi sokumba umgodi, ikakhulukazi liqukethe ipuleti lesisekelo, ipuleti eliphezulu, ukusekela induku nesixhumi nesixhumi nesixhumi nesixhumi nesixhumi.

Hlangana

Ukulayishwa kwebhokisi le-trech