博客 ... empty hem 边缘缺棉 excess extension 突咀 excessive thread end 多余的线头,漏剪的线头 ...
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There existed an optimal dosage of the chain extender, lack of which caused deficiency of chain extension and excess of which led to more blocking reaction.
扩链剂的用量存在最佳值,用量不足时偶联反应不充分,用量过量时封端反应加剧。
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