• 1. 磨刀机
  wheel chair elevator/lift 轮椅电梯...whetting machine 磨刀机...white metal 白合金
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1. But nanotubes have other qualities that are whetting the appetites of engineers:They're excellent conductors of electricity and heat，and they can be used as wires，semiconductors or superconductors. 
   但是纳管还具有其他的品质，吊起了工程师们的胃口：它们是电与热的优良导体，可以用作电线、半导体或超导体。

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