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

钫是碱金属中密度最大的，具有放射性。

The free alkali metals react immediately with water to liberate hydrogen.

的 碱金属直接和水中作用，放出氢气。

The resonance energies and the bond orders of alkali metals and graphite were calculated.

计算了碱金属和石墨的共轭能和键级。

Potassium: chemical element, one of the alkali metals, chemical symbol k, atomic number 19.

钾：一种碱金属化学元素，化学符号k，原子序数19。

So, you can see the alkali metals here: Li Be Mg all the way over here to neon and argon where you have stability.

所以大家看碱金属及碱土金属：,一个电子，lithium，，one，electron，两个，，and，then，beryllium，，magnesium，，two，electrons，所有的方法都是,让他们达到Ne，Ar的稳定结构。

Other Alkali Metals include Hydrogen (technically not a metal), Lithium, Sodium, Potassium, Rubidium, and Cesium.

其它碱金属包括氢(技术上说不是种金属)，锂，钠，钾，铷，铯。

This article introduces the existent problems and improvement methods about the Chemistry's Chapter Alkali Metals.

叙述《碱金属》一章的有关实验存在的问题和改进方法。

Alkali: Inorganic compound, any soluble hydroxide -oh. of the alkali metals: lithium, sodium, potassium, rubidium, and cesium.

碱：无机化合物，任何碱金属，即锂、钠、钾、铷、铯的可溶氢氧化物。

Experiments were performed to investigate heat transfer characteristics of liquid alkali metals in a micro-circular enclosure.

本文选用钠钾合金工质来研究封闭循环小通道内液态碱金属的热驱动换热性能。

With the characteristic of fluidized burning, this technology avoids alkali metals problem and the adaptability problem of changeful straw fuel.

该技术利用流态化燃烧的固有特点，避免了碱金属问题和针对多变秸秆燃料的适应性问题。

Different concentrations of oxygen-bearing organic matter show different influence on the absorbance of alkali metals with different regularities.

实验结果表明，不同浓度的含氧有机物对碱金属族各元素的吸光度影响幅度是不同的，其影响规律也有所不同。

The instrument is suitable for determing of anions, alkali metals and alkali earth metals in nuclear fuel reprocessing solution and high level liquid waste.

该仪器适用于核燃料后处理工艺溶液和高放废液中的阴离子和碱金属与碱土金属离子的色谱分析。

Azoxybisbenzo-15-crown-5 was synthesized. Photoinduced trans-cis isomerization as well as its ability to extract alkali metals and rare earth metals' were dis-cussed.

合成了一种新的双冠醚，氧化偶氮双苯并15 -冠- 5。初步探讨了它的光异构现象及其对稀土和碱金属离子的萃取能力。

Retention behavior of alkali metals, ammonium ion and alkyl amines on a sulfonic cation-exchange resin column with organic acid and inorganic acid as eluent was studied.

系统研究了碱金属、铵离子和烷基胺在磺酸型阳离子交换树脂柱上以有机酸和无机酸为淋洗液的保留行为。

Alkali metals are one of the important causes that leads to poor permeability of charge column, irregular furnace operation, frequent hanging and scaffolding in the stack.

碱金属是导致高炉料柱透气性恶化、炉况失常、频繁悬料和在炉身结瘤的一个重要原因。

The calculated results indicate that Chen's lattice inversion method was exact for radial interatomic potential of alkali metals with much faster convergence than CGE method.

计算表明，陈氏三维晶格反演比CGE方法具有更快的收敛性，容易获得较高精度的原子间相互作用势。

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.

离子交换剂在萃取色谱中得到了广泛的应用，本文详细总结了离子交换剂在分析化学中用于碱金属、碱土金属、贵金属、稀土元素、锕系元素等的分离与测定。

The catalyst of the invention utilizes mgal composite oxide as a carrier, nickel and cobalt or noble metals as active constituents, and alkali metals and lanthanon as auxiliaries.

本发明催化剂以镁铝复合氧化物为载体，以镍和钴或贵金属为活性 组分，以碱金属和稀土元素作为助剂。

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在熔融的碱金属或碱土金属氯化物盐浴中时，较易腐蚀的金属会沉积在较难腐蚀的金属上。

Applicable for acid and alkali welding rods for welding all non ferrous metals.

适用于酸性、碱性等各类焊条，能够焊接一切有色金属。

Should avoid combination with acid, alkali and heavy metals drugs, otherwise that will affect the titer of the thrombin.

避免与酸、碱及重金属药物配伍， 否则会影响凝血酶的效价。