英文關鍵字
excavator
mining
machine
line
symbol
quarry
industrial
process
equipment
technology
industry
iron
coal
processing
vibration
assessment
device
manufacturing
plant
mineral
limestone
environmental
opencast
goldmine
dust
quality
bulk
handling
system
sales
maintenance
repairs
fabrication
manufacture
factory
crusher
spare
construction
supervision
monitoring
engineering
material
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black