機器
accessory
asbestos
circle
circular
connection
cutout
detail
engine
engineering
equipment
factory
flange
flat
forging
gasket
heavy
hole
industrial
industry
isolated
joint
leakage
machinery
material
mechanic
mechanical
new
paronite
part
pipe
piping
plumber
plumbing
pressure
repair
replacement
ring
round
row
rubber
seal
set
size
spare
streamlining
technical
technology
tools
water