问答题

2、 The word ( ) itself usually refers to the deterioration of metals and ceramics, while similar phenomena inplastics generally called ( ) B. recrystallization...degradationD.corrosion... degradation

答案：答案：D. corrosion... degradation 解析：A. The word "corrosion" i...

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2、 The word ( ) itself usually refers to the deterioration of metals and ceramics, while similar phenomena inplastics generally called ( ) C.degradation...corrosion D.corrosion... degradation

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