英文關鍵字
abrasive
air
blast
blasting
clean
cleaning
construction
dust
dusty
engineering
equipment
fabrication
factory
force
gear
hazard
hazardous
health
heavy
helmet
hose
industrial
industry
industy
iron
manufacturing
mask
metal
metallurgical
oxide
paint
pipeline
preparation
pressure
production
protection
removal
rust
safe
sand
sandblast
sandblaster
sanding
shotblast
smelting
smooth
steel
stream
work
worker