“plug-and-feather hole”的概念、定义、翻译、参考文献-科学参考

单词	plug-and-feather hole
释义	plug-and-feather hole [¦plǝg ǝn `feth·ǝr ´hōl] ^ENGINEERING A hole drilled in quarries for the purpose of splitting a block of stone by the plug-and-feather method.
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