碱金属

Francium is the densest of the Alkali Metals and also radioactive.

钫是金属中密度最大的,具有放射性。

Based on the characteristics of biomass fuel, this article summarizes the sources of alkali metals in biomass and the elutriation and migration.

摘确了生物质燃料特点的基础上，对生物质中金属元素的来源和析出迁移规律进行了概述。

This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid.

离子交换剂萃取色谱中得到了广泛的应用，本文详细结了离子交换剂分析化学中用于金属、土金属、贵金属、稀土元素、锕系元素等的分离测定。

Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

结果表硫化铋只能溶于氢卤（除氢氟外）、稀硫金属卤化物的混合液中，不能溶于稀硫中。

When two different metals are placed in a fused alkali or alkaline-earth chloride bath, the more readily corrodible metal will deposit on the less corrodible one.

当两种不同的金属放熔融的金属或土金属氯化物盐浴中时,较易腐蚀的金属会沉积较难腐蚀的金属上。

It is studied further that the dissolubility of the bismuthous sulfide in the solutions of the non-oxidative strong acid through the experiment by means of chemical thermodynamics.

运用化学热力学基础理论和方法研究了硫化铋无氧化性强和可溶性金属卤化物溶液中的溶解性。

Abstract : When two different metals are placed in a fused alkali or alkaline-earth chloride bath, the more readily corrodible metal will deposit on the less corrodible one.

摘 ： 当两种不同的金属放熔融的金属或土金属氯化物盐浴中时,较易腐蚀的金属会沉积较难腐蚀的金属上。