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تاریخچه و کاربرد نایلون و نایلکس مطالعه تاریخچه و کاربردهای نایلون و نایلکس
sachiniymt684147
1 day 10 hours ago
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نایلون در اولین بار در سال 1940 توسط یک شرکت آمریکایی کشف شد. این ماده مصنوعی از ترکیبات پلیمر ساخته شده و به دلیل سختiness
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