Pure Bright Festival; Tomb Sweeping Day; Qingming Festival
纯石英纤芯单模光纤
pure silica core single-mode fiber
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相关词条
Gold can't be pure and man can't be perfect.
Ultra-pure Water Purifiers
International Union of Pure and Applied Chemistry，IUPAC
radiochemically pure
clear and pure
chemically pure
catalogue memory (pure associative memory)