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1.Britannia Refined Metals Ltd. was built in 1931 to refine the lead bullion produced at the Mt.Isa mine in Queensland,Australia.
不列颠精炼金属公司建于1931年,精炼产于澳大利亚昆士兰州芒特·艾萨的粗铅。收藏指正
2.The impact of sulphur overcharge percentage,heating temperature and heating time on percent formation of PbS are studied,and the PbS overcharge percentage,heating time and agitation time for decoppering from lead bullion are investigated too.
在本实验中,对硫加入过量率、加热温度、加热时间等制备PbS的工艺条件进行了研究,并确定了加PbS除铜工艺的最佳硫化铅用量,最佳搅拌时间等技术条件.收藏指正
3.bullion lead，rich lead
贵铅收藏指正
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