機器
appliance
belt
construction
control
craft
craftsman
danger
defect
define
dirt
electricity
engine
environment
equipment
evaluation
factory
industrial
industry
installation
instrument
iron
line
manufacturing
metal
outdoors
pipe
pipeline
piping
plant
processing
production
quality
radiation
radiography
repair
seam
sign
steel
technology
test
trench
tube
ultrasound
weld
welder
welding
welding seam
xray