21 化学特点
综合性能较好，冲击强度较高，化学稳定性,电性能良好。
与372有机玻璃的熔接性良好，制成双色塑件，且可表面镀铬，喷漆处理。
有高抗冲、高耐热、阻燃、增强、透明等级别。
流动性比HIPS差一点，比PMMA、PC等好，柔韧性好。
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详细说明：The young officer dared not lift his eyes to his uncle’s face; the consciousness of guilt rendered him powerless to utter a word in his defence.
“I have little more to say to you,” resumed the baronet. “I have loved you as a man rarely loves his nephew. I have loved you for the sake of the brother who died in my arms, and for the sake of one who was even dearer to me than that only brother — for the sake of the woman whom we both loved, and who made her choice between us — choosing the younger and poorer brother, and
