... particle density 颗粒密度 particle diameter ratio 粒径比 particle distribution 粒度分布、颗粒分布 ...
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When ceramic particles are mingled, the ratio of particle amount to diameter should keep constant, or the arrangement of particles will be disordered, thus decreasing the efficiency of filter.
当不同的陶瓷颗粒混合使用时，其数量和直径大小应该保持一定的比值，否则将会破坏粒子间的排列方式，影响过滤效率。
Molded particle pallet is produced with branch and small diameter wood so that utilization ratio of wood is raised.
用小径材、枝桠材生产刨花模压托盘代替实木托盘，以提高木材利用率。
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