penstock
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penstocks
feedwater
hydropower plant
hydropower
sewage treatment plant
dewatering
hydroelectric
pencader
sluice gate
storage tank
waste water system
steel pipe
hydroponically
hydroelectricity
pipelines
wastewater treatment
culverts
pench
waterpower
penich
penstock 相似图片
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penstocks
hydroelectric
hydropower plant
feedwater
hydropower
cheakamus
anticlinal
iron pipe
mine shaft
gaspipe
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penstocks
hydroelectric
hydropower plant
hydroelectricity
feedwater
hydropower
sewage treatment plant
kongsberg
pipes pumping
statkraft
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sluice gate
two-stage lock
water wheel
water stairs
mill wheel
millrace
water channel
watermills
hudswell
pigeon spring
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sluice gate
hydroelectric
hydropower plant
hydropower
hydroelectricity
water channel
vollenhoven
toktogul dam
maggia
pont saint-bénézet
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sluice gate
hydropower plant
mill wheel
the water shed
hydroelectric
brown waterfall
water wheel
water channel
watermills
ciliwung
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sluice gate
two-stage lock
culvert
the water shed
mill wheel
hydroelectric
bargewell
hydropower plant
millrace
water channel
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sluice gate
two-stage lock
downstream gate
canalisation
sea trenches
outfalls
water channel
floodwalls
the water shed
outfall
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acequia
shotcrete
penstocks
hydropower plant
canalisation
hydroelectric
pontes
hydropower
hydroelectricity
caltrans
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hydropower plant
penstocks
toktogul dam
hydroelectricity
hydropower
sutjeska
power towers
planica
kozara
the source of the danube
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penstocks
mining site
mine shaft
charcoal kiln
gold mining
crash site
open pit mining
bridge - building structure
log cart
mining
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waste water system
concrete pipe
ditch side
drainage pipes
sewage treatment plant
water supply
sewage pipe polluted water
gutter pipe
drain pipe
aqueduct
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penstocks
lötschberg tunnel
megalith facility harhoog
bunker
vollenhoven
floodwalls
fortifications
ditch side
dobnik
military fort
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rock gate
lötschberg tunnel
the limestone cave entrance
torii tunnel
chidorigafuchi
haakonsen
nitobe
penstocks
taroko
shotcrete
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alaska pipeline
iron pipe
feedwater
pressure pipes
pipes pumping
industrial tubes
midstream
sewage treatment plant
steel pipes
gas pipe
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mine shaft
the limestone cave entrance
mining site
pahaquarry
railway tunnel
bunker
rock gate
lötschberg tunnel
stone quarry
open pit mining
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hydropower plant
hydroelectricity
hydropower
aqueduct
aqueducts
waterpower
sewage treatment plant
water plant
waste water system
water supply
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steel pipes
drainage pipes
separators
steel pipe
industrial tubes
pipe work
iron construction
condensers
steel construction
corten steel
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hydropower plant
stone quarry
penstocks
hydroelectric
sluice gate
hydroelectricity
mining site
hydropower
the water shed
kautokeino
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sluice gate
hudswell
two-stage lock
steep bank
road bridge
ditch side
ambergate
footbridge
buffer stop
sweeping viaduct
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sluice gate
the water shed
water well
water channel
bunker
sewage treatment plant
vollenhoven
oil tank
waste water system
kwalwasser