Thawj tiam Excavator

Qhov tshwm sim ntawm cov tshuab hluav taws xob thiab cov tshuab hluav taws xob sab hauv tau muab cov khoom siv hluav taws xob zoo tshaj plaws thiab tsim nyog, ua rau muaj ntau yam khoom siv excavator. Xyoo 1899, thawj lub tshuab hluav taws xob excavator tau tshwm sim. Tom qab Tsov Rog Thoob Ntiaj Teb thib 1, lub tshuab hluav taws xob kuj tau siv rau hauv excavator, thiab hom tshuab excavator siv los ntawm cov tshuab hluav taws xob (lossis hluav taws xob) yog thawj tiam excavator.