单词 pech
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pech
时间: 2026-04-25 11:30:53
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1·Cellulosic fibres were treated with cationic modifying agents of PECH-amine and dyed with direct and reactive dyes without salts under neutral conditions.
纤维素纤维用聚环氧氯丙烷胺化物改性,并用直接染料、反应性染料中性、无盐染色。