The subscript O and W identify the unweathered and weathered states.

下标O和W分别表示属于未风化和已风化的状态.

辞典例句

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.

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Brightrays such as these are produced as impacts excavate and eject relatively unweathered subsurface material.

这些放射状陨石坑产生于天体撞击溅出的地下物质,绵延在遍布陨石坑的水星表面数百公里.

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