“sinker drill”的概念、定义、翻译、参考文献-科学参考

单词	sinker drill
释义	sinker drill [`siŋ·kǝr ´dril] ^{MINING ENGINEERING} A jackhammer type of rock drill used in shaft sinkings. Also known as sinker.
随便看	fourth sound four-track tape four-vector four-vector potential four-velocity four-way dip four-way reinforcing four-way switch four-way valve four-wheel drive four-wire circuit four-wire line four-wire repeater four-wire subscriber line four-wire terminating set fovea fovea centralis foveal vision foveola foveolate fowan fowl Fowler-DuBridge theory Fowler function fowlerite

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