The microstructure and property of the free cutting unquenched plastic die steels have been studied.
研
切削系非调质塑料模具钢的组织与性能。
The microstructure and property of the free cutting unquenched plastic die steels have been studied.
研切削系非调质塑料模具钢的组织与性能。
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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