单词	rotary drill
释义	rotary drill noun : a rock drill that bores by a rotary action Word History First Known Use 1860, in the meaning defined above
随便看	aleknight aleksandar obrenović aleksandr aleksandrovsk aleksandrovsk-grushevski Alemanni Alemannic Alembert, d' alembic alembicate alembicated alembication alembics alembroth Alemán Alemán Valdés alencons alençon Alençon diamond aleph aleph-bet aleph-null alephs alepidote alepisauri

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