三价

For instance, praseodymium forms the core of carbon arc lights that are used by the motion picture industry for studio lighting.

性状：黑色粉末，密度6.88 g/cm3，熔点2042℃，不溶于水，能溶于酸生成三价盐类。导电性良好。

The effects, such as the acidity of leaching system, the temperature and the concentration of the sodium chloride, on oxidation and leaching of copper-bearing gold ores were analyzed. The results show that the sequence of sulfide ores oxidized and dissolved are pyrrhotite firstly, sulphide secondly, then chalcopyrite, pyrite lastly.

结果表明：硫化矿的氧化溶解首先是磁黄铁矿，其次是铜的次生硫化矿，再次是黄铜矿，最后是黄铁矿；载金黄铜矿的氧化首先是铁从黄铜矿的晶格中氧化溶解出来，生成中间产物CuS2和CuS；较高的酸度和氯化钠浓度有利于单质硫的生成、三价铁的水解和铜的浸出，进而有利于金浸出率的提高。

The assorted minerals of zirconolite and sphene doping simulated actinide neodymiumwere fabricated by solid reaction, using zircon, titanium dioxide, calcium carbonate, Al2O3 as raw materials.

以ZrSiO4、CaCO3、TiO2、Al2O3、Nd2O3为原料，引入Al3+作价态补偿，通过固相反应制备包容模拟三价锕系核素Nd的钙钛锆石(CaZrTi2O7)和榍石(CaTiSiO5)组合矿物固化体。

The position of the short SC,which is on the long SC homologous synapsis of rob(13;17and 13,17moved ,from one-fourth of long SC to one-tenth of it ,near the end of 17arm.

II。三价体中短SC侧臂在长SC臂rob(13；17)与13、17上的位置发生移动，由原来的位于长SC的1/4处移动到了1/10处，即靠近17臂端。

Studies on syneresis behavior of Xantlian/Crhydrogels have been conducted at 70,80 and 90℃.

对黄原胶／三价铬水凝胶在70，80和90℃下的脱水行为进行了研究。

The onset of syneresis appeared at a critical Crdensity in a gel and the syneresis became serious when the Cr density increased.

脱水与凝胶的交联密度即参与交联反应的三价铬的含量有密切联系。

The process of syneresis can be described by means of apperant first-order reaction and the rate constant increased with increasing the temperature and the initial Crconcentration. The apparent activation energy was about 34.5 kcal/mol.

突发脱水之后的过程可以用一级反应动力学描述，反应速度常数随三价铬的浓度和温度的增高而增大，活化能为34.5kcal／mol。

There are blue and green emission spectral series in the phosphors activated by three valence ions of Terbium.

三价铽离子激活的磷光体有兰色和绿色两个发射谱线系列。本文分析了这两个系列谱线的强度，随着激活剂浓度而变化的实验结果，发现在激活剂浓度达到一定数量之后，当继续增加激活剂含量时，兰色和绿色发射谱线相对强度的变化规律，和加入敏化剂的结果是一致的。

In this paper, the experiment results in the strength of two spectral series depending on the concentration of sensibilizer Terbium have been analysed.

可见对于铽的绿色谱线而言，铽离子本身也会起一种敏化作用。据此，我们提出了三价铽离子具有自敏化效应的观点，来解释上述的实验结果，这种观点是：在含有较高浓度铽离子的磷光体中，铽离子既是绿色辐射的发光中心，又是它的敏化中心。

A white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite.

一种白色三价金属元素，有时归为稀土属，见于斯堪的纳维亚钪钇石中。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新