名词
中文翻译：可见粒子大小
同义词：
['visible particle size', 'observable particle size']
例句：
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1. The particle size distribution of thepowder is very important for its application.
粉末的粒径分布对其应用非常重要。
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2. The particlesize of the sand is measured by alaser diffraction method.
沙子的粒径通过激光衍射方法测量。
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3. Theparticle size of the coal can affect thecombustion efficiency of the furnace.
煤炭的粒径会影响炉子的燃烧效率。