三价的

When phosphine≥〓mol is added to a solution ofL1M in 〓, a strong fluorescence species L1ML is formed and a new off-onprocess is completed.The reaction of L2 with 〓 gives macrocyclic luminescencecomplexes L2M by the π-π interaction of the anthryl groups in the two L2ligands.

对其光物理性能进行研究表明由L1到L1MCu(Ⅰ、Ag、Au荧光被完全猝灭呈现荧光on-off开关现象，金属络合物作为新的荧光分子开关体系以金属离子为受体中心在溶液中对三价磷中性客体呈现off-on开关现象。

A soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process.

一种软质的黄白色三价金属元素，稀土属，能通过离子交换过程从氟碳锑矿或独居石中重新获

Molysite is introduced into releasing agent and with the increasing sensitivity of molysite ,a method for determination of ultra trace gold in rock samples by graphite furnace atomic absorption spectrometry is introduced.

在解脱测定液中引入三价铁盐，并在其增敏下，使用石墨炉原子吸收法测定岩石样品中的超痕量金。

A study on the metal ion-extractant interaction in the extraction of ncodymium and other trivalent lanthanide ions with monoacidic organophosphorus compounds by means of IR, NMR and electronic spectra is presented in this dissertation.

本文运用IR、NMR、电子光谱等手段研究了烷基磷酸在萃取Nd等三价镧系离子时的配位作用，通过f—f吸收光谱计算进行了Nd

Any of three anions,VO3,VO4,or V2O7,containing pentavalent vanadium.

钒酸盐三种阴离子，VO3，VO4，或V2O7之一，含有5价的钒

Themain points are as follows: In EtOH-HCl/EtOH medium tervalent Mo atoms exist mainly in the form of〓.

其要点如下：三价钼在EtoH-Hce/EtoH介质中的存在形式是〓为主。

Copolymer was synthesized by acrylic acid and 1H, 1H, 11H-perfluoro undecyl acrylate, then introducing europium ion into the copolymer.

利用丙烯酸全氟酯和丙烯酸共聚合成含氟的共聚物，再引入三价铕离子，从而制得稀土高分子发光材料。

The effects of the components of trivalent chrome passivation bath on the appearance and corrosion resistance of the passivating film are investigated.

研究了三价铬黑色钝化液组分对钝化层外观和耐蚀性的影响。

The bath compositions of trivalent chrome black passivation for zinc plating coating were optimized by orthogonal test method and the effects of operation conditions on the appearance and the corrosion resistance of the passivation film were investigated.

采用正交试验法对镀锌层三价铬黑色钝化工艺组分进行优化，研究了工艺参数对钝化膜外观和耐蚀性的影响。

This thesis compared the effect of Uracil, ITS, and ATP on the maturation of bovine oocytes and further development, observed the microstructure changes of oocytes and parthenogenetic embryos among different groups, and granule cell apoptosis among different groups.

本文对比了添加尿嘧啶和三价因子等试剂对牛卵母细胞成熟及后期发育的影响、观察了不同组之间成熟牛卵母细胞和孤雌激活胚胎显微结构变化和不同组之间颗粒细胞凋亡情况。

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。