正镍

The influences of plating process parameters, such as sulphamate concentration, electrolyte pH value and temperature, and pulse parameters, such as cathodal current density, pulse current frequency and duty cycle, on the micro-hardness of the nickel deposit has been studied by orthogonal experiments.

利用正交试验法分析研究了主盐氨基磺酸镍浓度、电镀过程工艺参数及脉冲参数（阴极电流密度、脉冲频率和占空比）对镀层显微硬度的影响；并对相关参数进行了优化。

The lithi um ion battery is replacing nickel-cadmium and nickel-hydrogen cells at a tremendously fast speed and becoming the main power for consumptive elec tric devices. The market potential is great at home and abroad.

正以惊人的速度逐步取代镍铬和镍氢电池，并成为消费电子产品中的主要电源，从中国和全球市场来看，锂离子电池的市场潜力是非常庞大的。

Methods30 nonextraction patients treated in the department of orthodontics in Shandong University in the same time period were enrolled in this study. The threepoint bending test was used to measure the strain and stress of arch wires at 37?℃.

方法选取山东大学口腔医学院正畸科同一时期内收治的30例上颌后牙段基本无拥挤的非拔牙矫治患者，利用三点弯曲试验装置（MTS Tytron 250， USA），检测未经使用、使用4周、8周及12周的镍钛弓丝在37？

The four-colour offset printing press Heidelberg, if a printing plate surface is a zinc or zinc or iron, iron will and Bailers in acid solution from chemical replacement reaction secable, nitrous oxide, drum body cannot ¤j¤?¤? backing and a printing plate, such as the drum surface long soaked in the acid corrosion, instilla secable, a printing plate chrome coated drum for restructuring into it or nickel does not result in more accidents.

四色海德堡胶印机，如果印版滚筒暗地是涂锌或铁，那么锌或铁城市与水斗溶液边的酸起化学置换不正答生锈、氧化，滚筒体不克不及紧贴衬垫物和印版，如滚筒背恒久泡在酸液边，会爆发腐化生锈，印版滚筒体改成涂铬或镍不离不会爆发以上变乱。

The optimal mass concentration of major salt for coloring ferroxyl color and coloring archaized green ...

通过正交实验确定了黄铜着铁锈色、黄铜着仿古绿色的最佳主盐质量浓度，分别为：50 g/L硫酸铜，100 g/L氯化铁，50 g/L氯化亚铁；20 g/L硫酸铜，5 g/L氯化钙，4 g/L氯化镍。

The fixture designs all utilized polished nickel plate or aluminum, crystals in orthogonal patterns and multiple lamps in a chandelier style to create greater mass.

夹具设计全部采用抛光镀镍或铝，晶体中正交模式和多种灯具有吊灯风格，创造更大的规模效益。

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。