Sand pipe
| (Geol.) | a tubular cavity, from a few inches to several feet in depth, occurring especially in calcareous rocks, and often filled with gravel, sand, etc.; - called also sand gall. |
See also: Sand
| 单词 | sand pipe | ||
| 释义 | Sand pipe
See also: Sand sand pipesand pipe[′san ‚pīp] |
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