二价

At first the energy of the microwave will energized the argon to be ionization, and the generated heat make the sulfur volatilizing into bivalency sulfur or dipolymer sulfur high pressure steam. The molecule transition will happen under the microwave energization, and the visible light will be emitted when the sulfur states change into the low energy level. The spectra of the plasma lamp is nearly centering at the visible lights, and there are very little ultraviolet and infrared spectrum, the Fig 3 shows the spectra of the sun and the plasma lamp from which we can see the spectrum character clearly.

微波能量首先激励氩气使其电离，产生的热量使硫挥发成为二价硫分子或二聚物高压蒸汽，在微能量的激励下使它形成分子跃迁，当返回到较低能级的状态时以连续光谱的形式放射出光线，它的光谱基本上集中在可见光，红外线和紫外线的辐射量很少，（图3）硫的放射光谱和太阳光谱的比较图片，可以很清晰地表达这一特性。

The synthesis and characterization of 3,3'trimethylenedi indene and divalent rareearth 3,3'-trimethylenediindenyl complexes

3，3＇－三亚甲基二茚和二价稀土3，3＇—三亚甲基二茚基配合物的合成与表征

After it was adjusted with ammonia until the test paper turned purple,in subacid medium of pH 6～7 ammonium acetate buffered solution,bivalent nickel was precipitated quantificationally by dimethylglyoxime.

试样以稀硝酸溶解高氯酸冒烟后，酒石酸掩蔽剂将铁等干扰元素配位掩蔽，以氨水调节至刚果红试纸呈紫色后，在pH6～7的乙酸铵缓冲溶液微酸性介质中，二价镍定量地被丁二酮肟沉淀。

With the mixed bacteria after aerated as the research subject,the effects of the different iron valences and concentration on hydrogen production capacity were discussed.

以驯化后的混合菌种为研究对象，在间歇实验的基础上探讨了不同价态的铁及不同浓度的二价铁离子对其产氢效能的影响。

The atomic properties of the superheavy element Hs(Z=108)and Uub(Z=112)have been studied theoretically in conjunction with the effects of electron correlations and relativistic effects.

在超重元素原子结构的研究中，通过细致考虑电子关联效应和Breit相互作用，计算了Hs(Z=108)和Uub(Z=112)原子的激发态结构、共振吸收振子强度及其一价和二价离子的基态等相关性质。

Fe〓 and nascent hydrogen that results from reduction of water at the iron surface may be not the main reductants.

溶液中的二价铁离子和零价铁与水溶液接触所产生的氢气对反应的影响不大。

The effect of three common hydro-chemical factors,such as univalent cation concentration(Na+ ion concentration),bivalent cation concentration(Ca2+ ion concentration) and pH value on clay particles releasing in sand column was studied through batch test.

通过批量试验，对一价阳离子浓度，二价阳离子等，浓度(Ca2+浓度)和pH值三个最常见水化学因素对砂柱中粘土颗粒释放的影响进行了研究。

On the other hand, the higher contents of hematite would not necessarily make the rocks red-colored, due to the suppression by other pigments, such as organic matter in black or ferrous iron of chlorite in green.

总体而言，浅红色岩层含有最高的总铁含量和赤铁矿铁，灰色岩层则以顺磁性的亚铁为主，暗色和绿色岩石仅含有顺磁性的二价铁或者与相对丰度较低的三价铁共存。

An unsaturated fatty acid whose carbon chain has one double or triple valence bond per molecule; found chiefly in olive oil and chicken and almonds.

碳链的分子均有一个二价或三价键的不饱和脂肪酸，主要存在于橄榄油、小鸡和杏仁中。

An unsaturated fatty acid whose carbon chain has one double or triple valence bond per molecule; found chiefly in olive oil and chicken and almonds.

碳链的分子均有一个二价三价键的不饱和脂肪酸，主要存在于橄榄油、小鸡和杏仁中。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。