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Two technology including nitrocarburizing process and salt nitrocarburzing process haver been adopted. Several conclusions were obtained: firstly, nitrided layers consist of two layers including the outer white layer, mainly ε and γ′ with favorite errosion resistance, the inner dark layer consist of α-Fe.

再往里为扩散层,扩散层与原始组织无明显区别,是过饱和含氮的α-Fe固溶体,比原始组织更易受腐蚀;(2)试样经长时间氮碳共渗后,渗层最表面会出现疏松,这是因为Fe原子向外扩散,在ε相内造成Fe原子空位,空位向内扩散,并可能在晶界上或某些晶体缺陷处堆积,以致造成空洞。

It was reheated to 780℃ and oil quenched for tempering at low temperature (200℃).

牙轮的材料为20Ni4Mo,热处理工艺为气体渗碳再进行780℃淬火+低温回火。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。