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When hydrochloric acid was added into saccharin sodium solution,chemical reaction happened,whose product was glucide,which cannot be dissolved in water,however,it can be dissolved by ethyl acetate,therefore glucide can be extracted from other components,then can be determined by titration with sodium hydroxide.

利用糖精钠与盐酸反应生成不溶于水而溶于乙酸乙酯的物质,将其萃取出来,然后再利用氢氧化钠对其进行滴定分析,采用二分试差法准确测定了某光亮镍添加剂中糖精钠及某光亮镍液中糖精钠的含量,分别为88。

The Spanish Cross in Bronze was die struck in tombak or bronzed brass and the Silver can be found both in hallmarked 800 grade silver and silver plated brass.

西班牙十字勋章是铜与锌的合金或被青铜的黄铜和银在青铜模子制。造,能发现品质800纯度的银,并且银上了黄铜。

The former consists of the spiculate FeAl3 phase which formed by the temperature deduction and the latter is composed of the lingulate FeAl3 and Fe2Al5 phases which embedded the substrate. Diffusion annealing as taken at 850℃, the structure changs apparently with increasing of the diffusion annealing time.

结果表明:浸层由表面富铝层及扩散层构成,富铝层包含降温形成的针状FeAl3相,扩散层由FeAl3、Fe2Al5相组成,形状如舌状指向基体。850℃扩散退火,随扩散时间的延长层组织结构明显变化。

The influence of NaOH~* concentration, Cu~(2+) concentration, NH_3·H_2O concentration, Cu/Ag ration, Ag~+ complexing reagent A concentration, NaOH concentration, loadage, silver content and granularity on the color, compact resistance, apparent density and anti-oxidation property of silver coated aluminum powder and silver plating time were studied by condition experiment.

通过条件实验,我们探讨了NaOH~*浓度、Cu~(2+)浓度、NH_3·H_2O浓度、Cu、Ag比、Ag~+络合剂A浓度、NaOH浓度、装载量、含银量、粉体粒度对银铝粉颜色、松装密度、压实电阻、抗氧化性及银时间的影响。

Herein, zinc-manganese alloy bath containing sulfate and citrate ions was selected, and the effect of anodes, manganous ions and continuous operation on bath stability was studied.

选择硫酸盐-柠檬酸盐体系锌锰合金液,研究了阳极、二价锰离子以及连续作用等因素对液稳定性的影响。

If throwing of metalization is the better,Than dog boning plating coming to pass is the least or it is more,Letterpress will search diversified factor that willk work on throwing from plating metalization thickness that it is work onfirst-degree currents and second-degrren current sand electricity chemical.

本文从电化学过程,从层厚度分布受一级和二级电流分布入手,探究影响分散性的各种因素,优化电工艺参数,从而教好克服狗骨层现象。

The methods of metallograph, SEM, EDS, dynamic potential scanning were applied to test the properties, and the coating conditions were optimized.

本工作以硫酸镍为主盐对镁合金进行了纳米TiO2/Ni-P复合,并用金相法、扫描电镜、X射线能谱、动电位扫描等手段研究了其性能,并优化了施条件。

In this study, we investigate the effect of post-annealing on magnetization damping in sputtering deposited NiFe thin films. The film thickness is ranged from 10 nm to 100 nm. Thin films were deposited at room temperature and a subsequent post-annealing was performed in vacuum better than 10-6 torr from room temperature to 700 0C for 30 minutes.

中文摘要本研究中,我们使用改变后退火效应来观察溅制程镍铁薄膜(Ni84Fe16)系列的磁性阻尼行为,溅薄膜厚度范围为10 nm ~ 100 nm,而镍铁薄膜后退火过程在真空度约10-7 torr中进行,达到标的温度(范围由室温至700 ℃)后定温30分钟,自然冷却取出。

Nontronite modified copper-plated electrodes possess the largest reductive currents of paraquat due to their larger charge density and electronic transferability of octahedral iron. Overall, based on this study, clay modified copper-plated electrodes show high potential in future research for determining biochemical compounds.

黏粒修饰铜电极对巴拉刈的侦测结果显示三种黏土矿物仍以具有较高电荷密度及八面体层中铁的电子传导之多铁蒙特石所测到的还原电流量最大,黏粒修饰铜电极未来在生化物质的侦测上应具有研究发展的潜力。

The study results have indicated that the alloy layer thickness decreases with increase of Si addition, increases linearly with rise of bath temperature and varies parabolically with length of dip time.

结果表明:在实验研究范围内,随硅元素含量的增加,合金层厚度降低;随浸温度的升高,合金层厚度呈直线增加;随浸时间的延长,合金层厚度呈抛物线规律变化。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力