助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   5 '-amp 的翻译结果: 查询用时:0.254秒
图标索引 分词
-amp
图标索引 历史查询
 

以下是整句翻译结果,是否逐词翻译

相关语句
查询“5 '-amp”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples...

In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the same steel are different and the difference increases with the increase of carbon content. We are inclined to think that in a low energy light source, the evaporation and the excitation of the alloying elements vary according to the existing form of carbon and this directly affects the results of spectrochemical analysis. The magnitude of this effect is different for different alloying elements, it is considerable in the case of Cr but is inappreciable in the case of Mn and Si.

我们用爱氏光源(低电流交流电弧)作高速钢的光谱分析时,发现样品的组织结构对于分析结果有影响。为了对这个现象得到进一步的了解,我们选择了10种含碳量不同的铬钢进行热处理试验和光谱分析。一系列实验的结果指出,用小电流(5安)电弧光源时,铬的光谱分析结果由于试样是退火组织或淬火组织而有差别,这个差别又随着钢中含碳量的增加而增加。我们认为,这种影响是由于碳在试样中存在状态的不同所引起的。在低功率光源中,这种不同使合金元素被蒸发和被激发的情况有所差别,因而就影响了光谱分析的结果。这种影响由于合金元素之不同而有程度上的不同,对铬的影响很显著,对锰和矽的影响则很小。此外,所选择的分析线对是弧线还是火花线,对于这种组织结构的效应也有显著的影响。 曾经进行了一些消除组织结构影响的实验。发现在应用低功率光源时,增加预燃时间并不能消除这个效应。用火花光源或大电流(8安)电弧光源时,这种影响大为减小。

For four years(1951—54)time determination data,after allowed for personal equation and referred to the mean observatory which is formed by the International Time Office(B.I.H.),seasonal fluctuation with amp- litude equals to 25 ms is found.That is,the clock corrections observed at Zi-Ka-Wei Observatory seem larger in May while smaller in February and July as compered with their annual mean. The Δ(α_α) type error of the fundamental catalogue(FK_3)contributes to the seasonal fluctuation with an amount of...

For four years(1951—54)time determination data,after allowed for personal equation and referred to the mean observatory which is formed by the International Time Office(B.I.H.),seasonal fluctuation with amp- litude equals to 25 ms is found.That is,the clock corrections observed at Zi-Ka-Wei Observatory seem larger in May while smaller in February and July as compered with their annual mean. The Δ(α_α) type error of the fundamental catalogue(FK_3)contributes to the seasonal fluctuation with an amount of 6ms only. Inclination of atmospheric equi-density surface in pre-earth layer which is calculated with air pressure and temperature data taken from Shanghai and Lig-Yang(180km west of Shanghai)shows annual variation of 2′.5, thus the effect of refraction anomaly corresponding to the inclination calcu- lated is practically null. Besides,room refraction is also harmful.By the air temperature data taken from the east and west wall inside the observing room,the effect of room refraction thus estimated may become 8 ms in summer and turn to zero in winter. However,after draw out the influence of Δ(α_α) type error and room re- fraction,the seasonal fluctuation still appear.It is thought that thermal deformation of the transit instrument may be account for,as the diurnal change of air temperature and the temperature drop at night both signi- ficantly correlate to the seasonal fluctuation of time observation.

中星仪测时的组内符合程度比组外符合程度约高一倍,这已是人所共知的事实.一般认为引起组外符合程度较差的因素是仪器情况的变更和反常折射的存在.本文根据1951—1954年间徐台的天文测时结果求出它的季节性变化,并考虑星表误差、反常折射以及其他气象因素在测时结果所引起的影响.在上述期间,徐台天文测时所用的是一具口径80mm 焦距86cm 的帕兰(Prin)中星仪,附有马达带动人手操纵的接触测微器,仪器的水平轴是用水银盘控制的.主要的观测者为龚惠人(K),沈祖耀(S),罗定江(L)三人.

In the presesnt paper, two methods for the determination of rare earth impu-rities ia "purified" cerium are described. (1) The sample to be analyzed is converted into chlorides (concentration 10mg CeO_2/ml and acidity 1: 19 HCl). Transfer a drop of the prepared solution tothe flat top of graphite electrode previously treated with liquid paraffin. The elec-trodes are dried on a hot plate and then excited in an A. C. arc (220 V, 5 Amp).Spectrograph, ISP--51 (with UF-85 autocollimating camera tube). Slit,...

In the presesnt paper, two methods for the determination of rare earth impu-rities ia "purified" cerium are described. (1) The sample to be analyzed is converted into chlorides (concentration 10mg CeO_2/ml and acidity 1: 19 HCl). Transfer a drop of the prepared solution tothe flat top of graphite electrode previously treated with liquid paraffin. The elec-trodes are dried on a hot plate and then excited in an A. C. arc (220 V, 5 Amp).Spectrograph, ISP--51 (with UF-85 autocollimating camera tube). Slit, 0.01 mm.Photographic plate, NIKFI Ⅱ. Using the line pairs (La 4333.74)/(Ce 4330.90'), (Pr 4225.33)/(Ce 4229.63'), (Nd 4061.09)/(Ce 4057.30) and (Y 4374.94)/(Ce 4376.88')La, Pr, Nd & Y can be determined quantitatively in the concentration ranges0.055--0.62%, 0.089--1.29%, 0.052%--0.59% and 0.025--0.40% respectively. Theroot mean square deviations of single determination amount to ±4.7%, ±10.8%,±7.0% and ±7.0% respectively. (2) For cerium samples of high purity, ether extraction is used to removemost of the cerium so that the rare-earth impurities can be concentrated. Becauseof its relatively simple spectrum, the element Y has been used as carrier and in-ternal standard. The concentrate, also in the form of chloride solution (concentration1 mg rare-earth oxides/ml), is excited and photographed by the same method asmentioned in (1) The line pairs used are: (La 4238.38)/(Y 4235.73'), (La 3988.52)/(Y 3951.60'), (Pr 4222.98)/(Y 4235.73) and (Nd 4232.38)/(Y 4235.73')With a sample of 100 mg (1 mg Y_2O_3 added as internal standard), the analyticalsensitivities reach 0.01%, 0.025% and 0.028% for La, Pr and Nd respectively. Theerror of the method amounts to about ±10%.

本工作报告铈中杂质镧、镨,钕及钇的两种光谱测定方法。(1)将试样的氯化物溶液滴于经液体石腊处理过的碳电极上,干燥后以交流电弧激发进行摄谱。采用线对 La 4333.74/Ce 43330.90,Pr 4225.33/Ce4229.63,Nd 4061.09/Ce 4057.30及Y 4374.94/Ce 4376.88时测定灵敏度分别可达0.055%,0.089%,0.052%,0.025%。单次摄谱的均方误差分别为±4.7%,±10.8%,±7.0%及±7.0%。 (2)对于较纯的铈,则采用乙醚萃取先行分离,以浓缩其中所含的杂质,并采用谱线较少的元素钇作内标及载体,以补偿分离过程中损失。浓缩物仍以氯化物溶液状态用上述的激发方法进行摄谱。采用下列线对: La 4238.38/Y 4235.73,La 3988.52/Y 3951.60,Pr 4222.98/Y 4235.73,Nd 4232.38/Y 4235.73取样100毫克时,镧、镨及钕的测定灵敏度分别可达0,01%;0.025%及0.028%。一般误差约在±10%左右。

 
<< 更多相关文摘    

 


 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社