“permissible explosive”的概念、定义、翻译、参考文献-科学参考

单词	permissible explosive
释义	permissible explosive [pǝr`mis·ǝ·bǝl ik`splō·siv] ^MATERIALS An explosive approved by the U.S. Bureau of Mines as safe for blasting in gassy and dusty mines.
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