機器
architect
architecture
builder
building
business
cap
company
concept
construction
consultant
design
employee
engineer
equipment
hammer
hard
hardhat
hat
helmet
icon
industrial
industry
isolated
letter
linear
logo
logotype
maintenance
man
outline
people
protect
protection
repair
safety
security
service
sign
symbol
t
technical
technician
thin
tool
warranty
work
worker
yellow