所提方法扩大了可测深度范围，可用于测量面形较陡的连续表面或不连续深结构表面。
Advantage of the approach is that the depth measurement range is expanded very much, it can be used to measure the profile of the deep or discontinuous surface.
山上有一个不超过一英里远，很陡高，而我爬到它的顶部，看到我在一个孤岛上，荒芜了，而我看到了充分的理由相信，无人居住。
There was a hill not over a mile away, very steep and high; and I climbed to the top of it, and saw that I was on an island, barren, and as I saw good reason to believe, uninhabited.
填土路基分段作业时，先施工路段端部必须留不陡于1：5的坡面，坡面必须整平压实，以便施工机械上下及下段路基施工时开台阶。
When fill earth subgrade exercise part by part. The former part's gradient should be less than 1:5. Slope surface must be flat, so that, the construction machine can move from top to bottom.
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