“mining shield”的概念、定义、翻译、参考文献-科学参考

单词	mining shield
释义	mining shield [`mīn·iŋ ´shēld] ^{MINING ENGINEERING} A canopy or cover for the protection of workers and machines at the face of a mechanized coal heading.
随便看	wellpoint system well-posed problem well-regulated system well shooting well-sorted well spacing well stimulation well-type manometer welt Welwitschiales Wenlockian Wentworth classification Wentworth quick-return motion Wentworth scale Wentzel-Kramers-Brillouin method Werdnig-Hoffmann disease Werfenian stage Werner band Werner complex wernerite Werner's syndrome Wernicke's encephalopathy Wertheim effect west West African cedar

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