The tests in this specification are intended to confirm the effectiveness of passivation, particularly with regard to the removal of free iron and other exogenous matter.

本技术规范之中的检测意在证实钝化的效果，尤其是关于游离铁和其它外生物质（杂质）的去除问题。

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Sand bottom die-casting padlock series, sentinel production "earth" brand iron padlock series, breed diversity, the specification is complete.

砂底压铸挂锁系列，定点生产“地球”牌铁挂锁系列，品种多样，规格齐全。

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The result show that, the as-cast casting can completely meet the specification of Cummins standard about ferrite ductile iron after omitting annealing by high volume production provement.

经批量生产验证，取消了退火，铸态完全达到了康明斯标准规定的铁素体球铁的要求。

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