三价

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。

In this experiment, we use different kind of solvent to extract Vitaceae plants to test of antioxidae, includes clean DPPH free radical, ferrous ions chelating effects, restrain producing superoxide anion, ferric reducing ability of plasma and anti-liver lipid peroxidation assay.

在利用不同溶媒萃取葡萄科植物评估抗乳癌细胞株MCF-7毒杀试验和抗氧化试验中，其包含清除DPPH自由基、螯合亚铁离子、抑制超氧阴离子之生成、还原三价铁离子能力测定及抗肝脂质过氧化等几项。

Previous compound technics consumed a lot of dextrin,and in order to depleting the toxicity of iron sorbit ,we need use methanol and ethanol for refining it.

山梨醇铁是三价铁、山梨醇与柠檬酸的胶体络合物，以前的合成工艺消耗大量的糊精，为了降低山梨醇铁的毒性，需要用甲醇和乙醇进行精制。

A new process electrodepositing antiwear Fe—Ni—P alloy was developed in this paper. The stress has been put on resolving bath oxidation and a series of problems of the coating quality which Fe〓 would bring in existence of large amount of iron in bath.

立足于摩擦表面改性和非晶合金的特殊性能，开发研究了电沉积Fe-Ni-P耐磨合金新工艺，着重解决镀液中大量铁存在时的氧化以及三价铁离子给镀层质量带来的一系列问题。

Since the reaction conditions are moiled,and the productswere isolated easily,so it is a easy and new method for the preparation of complexescontaining titanium-tin bond.

反应的ESR研究发现，反应过程中存在三价钛中间体，包括〓X和〓，认为反应是经由自由基过程进行的。

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。

Leaching sulphate concentration was increased when inoculation concentrations superinduced, difference between 25% and 50% inoculation was not obviously after several days of bioleaching.

该菌在培养过程中pH先上升后下降最后稳定在2.0左右，60h培养后溶液中的亚铁离子浓度降至检测范围以下，同时生成含有三价铁的褐色沉淀。

In order to prevent the acid sludge forming during acidizing treatment for Putaohua formation in Daqing peripheral oilfield, the research on colloid and bitumen in oil, acid system, ferric ion and anti -sludge agent has been carried out to determine the possibility of sludge forming.

从立足于研究大庆外围葡萄花油层原油防止酸渣形成的方法入手，从原油胶质沥青质、酸液类型、三价铁离子和各种类型的抗渣剂等方面，考察了大庆外围葡萄花油层的原油与酸接触，形成酸渣的可能性。

The bath compositions of trivalent chrome black passivation for zinc-iron alloy coating were optimized by orthogonal test method.

采用正交试验法对锌-铁合金镀层三价铬黑色钝化工艺进行优化，并研究了工艺参数对钝化膜外观和耐蚀性等影响。

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。

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。