研究镀铬钢板表面微观缺陷对其所包装食品的影响。
The effect of the surface of micro-defects of tin plate steel (TFS) used for food packaging to the quality of food was studied.
结果表明，合金微观缺陷的存在能大幅度提高金的性能。
Experimental results show that the microdefect in the alloys can improve the properties of the alloys apparently.
可以看出，正电子湮没技术是研究金属微观缺陷结构的有力手段。
It is shown that the positron annihilation technique is a powerful method for investigating the structure of the defects in metal.
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