There are numerous robot applications for doing personal chores, such as vacuuming carpets, ironing sheets or cutting grass.
很多机器人应用程序能做一些个人琐事,例如使用吸尘器打扫地毯,熨烫被单或割草等。
Until now, these graphene nanoribbons were made using top-down approaches, such as "cutting" the ribbons from larger graphene sheets or "unzipping" carbon nanotubes.
目前为止,石墨烯带的制作都是通过自顶向下的方法,如用激光从大片石墨烯层上“剪”出带状或是“剖”开碳纳米管。
Compared with previous waves of restructuring, this one was more about generating operating efficiencies by cutting jobs and capacity than about restructuring balance-sheets.
跟以往的重组风潮相比,这一次的风潮更侧重于通过减少就职岗位和产量来提高运行效率而不是重组资产负债表。
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