devel
美 ['devl]英 ['devl]
- n.〈英〉沉重打击;令人发晕的一击
- v.〈英〉给…以沉重的一击
- 网络开发;开发工具;程序开发工具

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Characteristics of Non-metallic Mineral Resources for Building Material in Yunnan and its Devel oped Utilization
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