渗渗是汉语词汇，拼音是shèn shèn，解释为寒冷貌。
本文研究了20 钢和45 钢的碳硼复合渗渗层组织及耐磨性能。
The structure and wear resistance of layers of C-B double cementation of steels 20 and 45 have been studied.
研究了在不同气氛下进行离子渗氮对TC 4钛合金渗氮层的组织与性能的影响。
The effect of the atmosphere on the structure and properties of ion nitriding layer of alloy TC4 was investigated.
介绍了三种主要的浸渗方法和三种浸渗剂的特性以及这项技术的使用效果。
Three chief methods of impregnation and the characteristic of three impregnation agents and their effects are introduced.
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