機器
arc
building
construction
construction site
craftsman
dangerous
electric
engineering
equipment
factory
fire
fix
flame
flash
glove
helmet
hot
industrial
instrument
job
light
male
man
manufacturing
mask
metal
metalwork
person
professional
protection
repair
safety
site
skill
smoke
spark
steel
structure
technical
technology
tool
welder
work
workplace
workwear