单词：chemical erosion
chemical erosion的用法和样例：
例句
- Chemical weathering was beginning to attack the unweathered bedrock.化学侵蚀作用开始攻击还未侵蚀的岩床。
- The wall must be protected against chemical attack from highly corrosive components of the combusting gases.必须把室壁保护起来以防止来自燃气的高度腐蚀性成分的化学侵蚀。
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