layer rock是什么意思 layer rock怎么读
layer rock的用法和样例
- Samdwich rock slope is a kind of common slopes in the hydroelectric project, which have complicated project nature, influence the life security of people.
层状岩质边坡是水利水电工程中常见的一种边坡,具有复杂的地质条件和工程特性,影响着施工人员的生命安全。
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