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hochtief
heavylift
tunnel
sinkholes
ellipsoidal
concrete pipe
tevatron
mine shaft
wartsila
cofferdams
extension ring
34 meters high
conduit
slide tunnel
infraestructura
komatsu
middle tube
excavation
terminillo
underpin
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GIF 动图
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hochtief
extension ring
concrete pipe
wartsila
tunnel
underpin
heavylift
ellipsoidal
two-stage lock
tevatron
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cofferdams
construction pole
34 meters high
obras
construction site
sinkhole
loading crane
infraestructura
the large crane
heavylift
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excavation
sinkholes
excavation site
concrete pipe
shotcrete
overhead view
digesters
tepco
aerial photograph
excavation work
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tunnelling
tunneling
slide tunnel
lötschberg tunnel
train tunnel
railway tunnel
underpin
tokamak
tunnelled
trunnion
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mining facility
hydropower plant
mine shaft
dewatering
excavation
covanta
quarrying
mining site
obras
overhead view
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lötschberg tunnel
dewatering
heavylift
underpin
tevatron
wartsila
hochtief
two-stage lock
cofferdams
shotcrete
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concrete pipe
trunnion
nacelle
tunnelling
nstx
shotcrete
main landing gear
downhole
tokamak
duct
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shotcrete
dewatering
concrete construction
concrete plant
cementitious
loesche
geotechnical
cofferdams
loading crane
superelevation
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tunnelling
lötschberg tunnel
mine shaft
penstocks
underpin
trunnion
railway tunnel
two-stage lock
tunneling
mining facility
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tunnelling
tunneling
underpin
shotcrete
railway tunnel
lötschberg tunnel
train tunnel
concrete pipe
tunnelled
underpinning
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vogtle
cofferdams
sinkhole
megaprojects
liebherr
cross section
heavylift
central constructive
dewatering
underpin
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heavylift
interconnector
cofferdams
gondola lift
ellipsoidal
34 meters high
overhead view
loading crane
engine compartment
combustor
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tunnelling
tunneling
underpasses
trunnion
shotcrete
concrete pipe
underpin
slide tunnel
tunnelled
train tunnel
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tevatron
train tunnel
tunnel
tunnelled
duct
slide tunnel
railway tunnel
sewer pipes
concrete pipe
tunnelers
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tunnelling
tunneling
railway tunnel
tunnelled
tunnelers
train tunnel
tunneled
wall tunnel
slide tunnel
mirny
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loading crane
crane boom
the large crane
heavylift
loading cranes
gondola lift
truck mounted crane
34 meters high
harbor crane
truck crane
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gantry crane
danger overhead crane
high voltage pylon
construction pole
two-stage lock
construction sign
construction area
loading crane
dewatering
mine shaft
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gantry crane
load crane
loading crane
truck mounted crane
penstocks
liebherr
truck crane
danger overhead crane
heavylift
the large crane
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danger overhead crane
gantry crane
overhead view
chantiers
penstocks
cofferdams
load crane
the large crane
loading crane
construction area
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shotcrete
dewatering
concrete construction
liebherr
excavation
compacting
geotechnical
kobelco
excavate
excavation work