Similar to 建設機械

Soil classification

Retaining wall

Cut and fill

Dip slope

Well drainage

Standard penetration test

Exploration geophysics

Fill dirt

Boring (earth)

Decomposed granite

Effective stress

29th century BC

28th century BC

27th century BC

26th century BC

25th century BC

24th century BC

23rd century BC

22nd century BC

20th century BC