英文關鍵字
adjust
assembly
bitumen
bituminous
black
blowpipe
blowtorch
burn
burner
coating
felt
fire
flame
gas
heat
hot
installation
insulation
intermittently
manually
melt
out
proofing
propane
put
repair
repairman
resin
roof
roofer
roofing
rooftop
smears
spread
stretch
surface
tar
tarmac
tarring
team
teamwork
technique
technology
together
tool
torch
waterproof
waterproofing
weld