“ultrasonic drill”的概念、定义、翻译、参考文献-科学参考

单词	ultrasonic drill
释义	ultrasonic drill [¦ǝl·trǝ`sän·ik `dril] ^{MECHANICAL ENGINEERING} A drill in which a magnetostrictive transducer is attached to a tapered cone serving as a velocity transformer; with an appropriate tool at the end of the transformer, practically any shape of hole can be drilled in hard, brittle materials such as tungsten carbide and gems.
随便看	motor-converter motor cortex motorcycle motor effect motor element motor end plate motor-generator set motor grader motor meter motor nerve motor neuron motor noise motor reducer motorship motor speech area motor system motor torpedo boat motortruck motor unit motor vehicle mottle mottled mottled iron mottle-leaf mottramite

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