英文關鍵字
undercutting
device
diamond
wire
machine
saw
rope
masonry
house
cut
insulating
building
against
moisture
professional
work
waterproofing
cutting
brick
wall
chainsaw
activity
mason
builder
construction
concrete
tiles
equipment
technology
village
city
object
dangerous
movement
place
czech
republic
europe
european
union
plaster
sand
material
technical
solution
entrance
wood
windows
industry
old