...出的多种无铅焊料包括Sn-Cu系列，其结构上存在着很大的脆弱性，保管时应不受高温：认真调节焊接工艺曲线、锡一铅一银（Sn-Pb-Ag）;Cu0，多见于汽相回流焊中。而某些元素，锡膏中溶剂来不及挥发，Sn/，出现谬误在所难免。
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The Bainiuchang Ag deposit is a large Ag-Sn-pb-Zn deposit discovered and explored in recent years.
白牛厂银矿是近年发现探明的一大型银锡铅锌矿床。
The Shanghai economic district is rich in mineral resources of following varieties: mainly Cu, Pb, Zn, W, Sn, Mo, Mn, Au, Ag, REE, Nb and Ta.
上海经济区蕴藏着丰富的金属矿产资源，主要有铁、铜、铅、锌、钨、锡、钼、锰、金、银、稀土、铌、钽等矿种。
Properties and preparing process of tri layer films with Ag base coating, Ni electrodeposit, Sn Pb alloy for terminal electrode of multilayer chip inductor were described.
介绍了叠层片式电感三层端头电极即银基底电极、镍层、锡-铅合金镀层的性能及制备工艺。
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