1. The microstructure and property of the free cutting unquenched plastic die steels have been studied.
   研究了易切削系非调质塑料模具钢的组织与性能。
2. My best wishes to you all, and I hope that you will enjoy meeting Tommy and Tuppence again, years older, but with spirit unquenched!
   在此我向大家致意，并且希望你们会喜欢年纪虽长、活力依然旺盛的汤米和塔珀丝！

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