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تاریخچه و کاربرد نایلون و نایلکس تاریخچه و موارد مصرف نایلون و نایلکس
elainedfnv028800
- 3 hours ago
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نایلون و اولین بار در سال 1935 توسط یک شرکت آمریکایی کشف شد. این ماده مصنوعی از ترکیبات پروپیلن ساخته شده و به دلیل سختiness
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