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The Er3＋up-converted luminescent process in oxyfluoride glass-ceramics is discussed and it is found that the non-quadratic relation between green up-converted luminescent intensity and pump power is caused by the strong cross-relaxation process of rare earth ions.

对稀土离子共掺杂系统，分析了Er3＋在铒镱共掺杂的氟氧化物玻璃陶瓷中的上转换发光过程，认为Er3＋绿色辐射的上转换发光强度与抽运激光功率的非平方关系是由于Er3＋和Yb3＋之间的强交叉弛豫过程引起的。

Oxyfluoride materials are composed of fluoride micro-crystal which is inserted into oxide glass host. Rare earth ions were priority deposited into fluoride micro-crystal, with lower phonon energy environment.

氟氧化合物由氟化物微晶镶嵌于氧化物玻璃基质中构成的，掺杂的稀土离子优先沉淀于氟化物微晶中，处于低声子能量的环境。

The oscillator strength and integrated emission section value of 〓H〓→〓I〓(521 nm) for Er〓 ions in visible wavelength is large, it means that Er〓 doped oxyfluoride glass-ceramics may be lase in short wavelength.

Er〓离子可见光波段的几个通道如〓H〓→〓I〓（521nm）有大的振子强度，积分发射截面和较高的荧光分支比，有可能实现短波长的激光输出。

In this paper, transparent Er(superscript 2+) ions doped oxyfluoride glass-ceramics was prepared by high temperature melting and thermal treatment technology. The changes of micro-crystals structure, UV-VIS absorption spectra and NIR emitting spectra occurred with the variety of Er(superscript 3+) concentrations were studied.

采用高温熔融及热处理工艺，制备了透明度良好的Er(上标 3+)离子掺杂的氟氧化物玻璃陶瓷，并研究了不同Er(上标 3+)离子掺杂浓度下，玻璃陶瓷微晶结构、紫外－可见波段吸收光谱、近红外发射光谱的变化。

De script ions like "Palaeolithic Man"."Neolithic Man", etc., neatly sum up whole periods.

例如，&旧石器时代人&、&新石器时代人&等说法就简洁地概括了一个个完整的时代。

As to human scenery, there are many overhanging coffins and in script ions on escarpments in Danxia and Karst landform areas, in addition, there are also many famous mountains of Taoism and grottoes of Buddhism in Danxia landform areas, and many paleoanthropological sites and charming landscapes of national culture in Karst landform areas.

人文景观方面，丹霞地貌区与岩溶地貌区均遗存众多悬棺崖墓和摩岩题刻；此外，前者还以道教名山和佛教石窟众多而见长，后者则在古人类遗址和民族风情方面占据优势。

In neutral or acidic solution, it forms a black or brown precipitate with palladous ions depending on the amount of the latter present.

铂离子与试剂生成类似的棕色沉淀，但可以用加入大量的磷酸根除去其干扰。

An insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water.

硬脂酸和棕榈酸的不溶的钙盐，在肥皂与含有钙离子的水混合时形成，是硬水地区产生的浮渣。

Recently, it was reported that PANI could interact with many heavy metal ions and rare-earth cations.

研究表明：聚苯胺可以和许多金属离子和稀土离子相互作用。

Three species of Peganum seedlings were treated with different concentrations of NaCl. The content of main inorganic ions and organic solutes, the osmotic potential and the osmotic adjustment ability of roots and leaves were determined in 28 days after being treated.

研究NaCl处理对骆驼蓬属植物幼苗生物量、植株中主要无机离子和有机溶质的含量及渗透调节能力的影响。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥