Indicate component materials and dimensions and include construction and application details.

说明材料组分和尺寸，包括构造和应用施工细节。

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Machinists set up and operate a variety of machine tools to cut or grind metal, plastic or other materials to make or modify parts or products with precise dimensions.

机械师设置和操作各种机床，切割或研磨金属，塑料或其他材料来制作或修改精确尺寸的零件或产品。

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When these three-dimensionally ordered macroporous materials have pore dimensions comparable to the wavelength of visible light, they are of interest as photonic band gaps and optical stop-bands.

当这些三维的有序大孔材料具有孔维度和可见光的波长相当时，它们就可以作为光子带隙和带阻。

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The researchers first created separate nanoparticles of two materials, lead selenide and magnetic iron oxide, with precise dimensions.

ECONOMIST: MONITOR

Last month DARPA, the U.S. Defense Department's research agency, invited proposals from robotics experts to build a "chemical robot" made from soft, flexible materials and capable of squeezing through gaps smaller than its regular dimensions.

CNN: Robotics discovers its soft side