Masonry-gravity dam, build at the narrow gully section of the small or very small basins, is a kind of retainingworks of debris flow in common use.
圬工重力坝是泥石流工程防治常用的一种坝型,多建于特小流域或小流域沟谷的狭窄地段。
2
He says the works there-which have included shoring up a stone retaining wall and restoring an outdoor stone altar-were not only necessary, but a feat.
他说那里的施工——包括加固一面石头护墙,整修一个室外的石头祭坛——不仅必须,而且称得上壮举。
3
The works mainly comprise the upgrading of some 42 man-made slopes and retaining walls maintained by the Highways Department in the New Territories and Outlying Islands.