According to the theory of solid physics from metal micro - structure and compression strength of tin-coating grain, a study is carried out in this essay on mechanism of parts stained with black dust.
根据固体物理中金属的微观结构、镀锡晶粒的抗压强度理论，分析了黑色粉末产生的机理。
According to the theory of solid physics from metal micro - structure and compression strength of tin-coating grain, a study is carried out in this essay on mechanism of parts stained with black dust.
根据固体物理中金属的微观结构、镀锡晶粒的抗压强度理论，分析了黑色粉末产生的机理。
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