culverts

n.

管路( culvert的名词复数 )；

box culvert箱形涵洞

Apparatus for thawing frozen culverts
Drainage culverts as habitat linkages and factors affecting passage by mammals
FISH PASSAGE THROUGH CULVERTS, ROCK WEIRS AND ESTUARINE OBSTRUCTIONS
Landscape-level stream fragmentation caused by hanging culverts along ...
Cutting the carnage: wildlife usage of road culverts in north-eastern New South Wales
The Effect of Roads, Barrier Fences, and Culverts on Desert Tortoise Populations in California, USA
Permeability of roads and railways to vertebrates: The importance of culverts
Effectiveness of a barrier wall and culverts in reducing wildlife mortality on a heavily traveled highway in Florida
A simple contact–friction interface element with applications to buried culverts
Response of carnivores to existing highway culverts and underpasses: implications for road planning and mitigation