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最佳答案：保证人工翻译,16.空气间隙大小的控制自挤出机机头出口处到冷却辊与压辊接触线之间的距离称为“空气间隙”.空气间隙大小对挤出薄膜表面氧化程度和粘合力大小有影响,这
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最佳答案：She has no reaction to my wordsThis article suggests the complicated relationshi
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最佳答案：1 Busy work makes it hard for people to have a balanced diet.2 He squeezed the l
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最佳答案：In this article it was described how to make a composite material by means of ex
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最佳答案：One thousand do you want to cancel the trip, please inform us at least one month