"drainage"的搜索结果

drainage channel workers

标签: drainage,channel,workers 浏览: 14

aerial photo of habitat restoration water drainage

标签: aerial,photo,of,habitat,restor 浏览: 12

wetlands drainage pipes

标签: wetlands,drainage,pipes 浏览: 12

drainage canal was manually constructed in order to provide a permanent waterway promoting

标签: drainage,canal,was,manually,co 浏览: 17

drainage canal was constructed in order to provide a permanent waterway promoting the free flow of water

标签: drainage,canal,was,constructed 浏览: 17

workers practicing vector control by digging a drainage ditch in order to help disperse standing water

标签: workers,practicing,vector,cont 浏览: 22

this drainage canal was undergoing reconstruction in order to provide a permanent waterway

标签: this,drainage,canal,was,underg 浏览: 13

saltmeadow cordgrass spartina patens watery marsh was traversed by a network of drainage ditches

标签: saltmeadow,cordgrass,spartina, 浏览: 15

install drainage ditches to carry away sewage from the saida neighborhood of karada district in baghdad

标签: install,drainage,ditches,to,ca 浏览: 16

haitian farmer walking by drainage canal in southern haiti

标签: haitian,farmer,walking,by,drai 浏览: 14