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硬铅

网络regulus lead;Hard lead

硬铅

1

一种用于制造蓄电池铅板的硬铅。

A kind of hard lead that is used for grids in storage batteries .
2

这种冷却过程叫做淬硬。特号铅淬火冷拉钢丝

The process of cooling is called quench . special improved patented steel wire
3

硬聚氯乙烯给水管材铅配方体系转换的探讨

Study of Changes of Formula Systems of Lead-Based Stabilizer of Unplasticized Polyvinyl Chloride ( PVC-U ) Pipes for Water Supply

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