The application of lead salt in the cyanide leaching operation can produce microcell in the surface of gold grain.
氰化作业中应用铅盐可在金粒表面形成微电池,对于纯金颗粒这原电池可促进金的
。
The application of lead salt in the cyanide leaching operation can produce microcell in the surface of gold grain.
氰化作业中应用铅盐可在金粒表面形成微电池,对于纯金颗粒这原电池可促进金的。
The Constantinian gold solidus or nomisma remained the standard gold coin and maintained its proper weight, with little variation, till the eleventh century.
士坦丁金索里迪在无
改动情况下，保持纯金
至十一世纪。
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