用吹扫捕集法作试样预处理。
Puffing and trapping technique was used in the sample pretreatment.
现从机理上探讨这种预处理对于软土试样的必要性。
The necessity of this treatment is discussed through inquiring into mechanism.
冷、热变形预处理条件对组织演变产生一定的影响，给试样施加变形是SIMA工艺的必要步骤。
Pretreatment condition, i. e. cold or hot deformation, has important effects on microstructure evolution, and deformation of samples is a necessary step in SIMA process.
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