機器
abstract
background
balance
bantu
building
clay
construction
conveying
crush
crusher
dust
earth
engineering
environment
equipment
factory
giling
granite
gravel
gray
grinding
grinding machines
heavy
industrial
industry
job
kitchen
machinery
manufacturing
material
metal
mill
millstone
mine
mineral
penggilingan
plant
pound
prepare
quarry
quarrying
rock
sand
spa
stone
technique
technology
traditional
work