The microstructure and property of the free cutting unquenched plastic die steels have been studied.
究了易切削系非调质塑料模具钢的组织与
能。
The microstructure and property of the free cutting unquenched plastic die steels have been studied.
究了易切削系非调质塑料模具钢的组织与能。
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
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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