铅灰

包铅灰吹法测定粗铜中金和银

The wrap lead cupelling method for the determination of gold and silver contents of bessemer copper

他还常用金色、白色、蓝色、黑色、铅灰等色彩构成各种丰美的意象。

He also constitutes images by means of colors , including gold , white , red , blue and grey .

本文介绍了测定粗铜中金和银包铅灰吹法及其许多优点，同时认为，使用好防粘剂是很重要的。

This paper gives a detailed description of the advantages of wrap lead cupelling method for the determination of gold and silver in bessemer copper . At the same time , the use of adhesion preventer is very important .

铅在灰钙土土壤&植物系统与环境中的迁移和环境容量

Enviromental migration and capacity of lead in the sierozem soil-plant system

研究了微量铅对灰铸铁石墨形态、基体组织、机械性能以及铸造性能的影响。结果表明，铅显著影响铸铁石墨形态，导致机械性能的恶化，铸铁中铅含量应控制在0.005%以下。

The effect of trace Pb on the graphite morphology , matrix structures and mechanical properties and castability of grey iron was investigated , the result showed that Pb remarkably changed graphite morphology of grey iron and Pb content must be limited to ≤ 0.005 %

本工作对经典的灰吹法进行了改进，铅扣不经灰吹直接溶解于HClO4-HAc介质中。

This paper describes a modification of the classical lead cupellation in which the lead button , without cupellation , is directly dissolved in HClO_4 & HAc medium .