... microscopic stress 微观应力 microscopic crack 微裂纹 microscopic sizing 测微法 ...
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microscopic fatigue crack 显微疲劳裂纹
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The latest evolution in data security leaves numbers behind and returns to the physical world: A plastic token filled with microscopic glass spheres, and it looks like a much harder nut to crack than the codes of the past.
FORBES: Safety in Numbers
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