sand riverbed

常见例句

From here it is only a small step into the riverbed to inspect the sand bars, downed logs and stumps left by the last torrent .
从这里只是一小步，成为河床视察沙洲，倒木和树桩上留下的最后的洪流。
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The variations of flow pattern cause headwater erosion, and the sand gravel extraction will result in comprehensive adjustment of riverbed , affecting riverbed stability.
水流流态变化引起溯源冲刷，进而导致河床全面调整，影响河床稳定。
The cost to construct the permanent engineering, which is for preventing the bank from flood using current normal method of construction on riverbed made of sand, is too high to be accepted.
如何利用现有的常规方法在粉细沙河床上修建永久防洪护堤工程，因其工程造价过高致使社会难以承担；为此，提出采用斜向灌浆护坡新技术修建永久性防洪护堤。