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
   gravimetric 的翻译结果: 查询用时:0.056秒
图标索引 在分类学科中查询
所有学科
化学
地质学
自然地理学和测绘学
地球物理学
无机化工
呼吸系统疾病
急救医学
更多类别查询

图标索引 历史查询
 

gravimetric
相关语句
  重量
     A Study on a New Gravimetric Method for Determination of Tantalum by Weighing(C_6H_5)_4 AsTaF_6
     以(C_6H_5)_4AsTaF_6称量形式重量法测定钽的研究
短句来源
     The gravimetric and volumetric energydensity of test batteries are 35~37 Wh/kg and 93~99 Wh/dm ̄3 respectively.
     试验电池重量和体积能量密度分别为35~37Wh/kg和93~99Wh/dm ̄3。
短句来源
     A NEW GRAVIMETRIC METHOD FOR DETERMINATION OF TANTALUN IN CEMENTED CARBIDE BY WEIGHING (C_6H_5)_4ASTaF_6
     以(C_6H_5)_4ASTaF_6称量形式重量法测定硬质合金中的钽
短句来源
     Gravimetric determination of SO_4~(2-) with microwave heating technique
     微波加热技术用于重量法测定SO_4~(2-)
短句来源
     The sorptive and diffusive properties of C 2H 4 and O 2 on different kinds of adsorbents were investigated by gravimetric method It has been shown that amount of equilibrium adsorption of C 2H 4 is larger than that of O 2 on 5A,13X,mordenite zeolites and carbon molecular sieve;
     采用重量法在电子天平上研究了C2H4和O2单组份在5A、13X、丝光沸石和碳分子筛等不同吸附剂上的吸附平衡性质和扩散动力学性质。 结果表明,在沸石类吸附剂上,C2H4的平衡吸附量远大于O2的平衡吸附量,C2H4的吸附扩散速率也大于O2的扩散速率;
短句来源
更多       
  重力
     Using ETERNA harmonic analysis programs, we obtain the gravimetric parameters(amplitude factors and phase lags) of two main tidal waves: O 1 :1.1788±0.0006, -0.5975°±0.028°;
     利用ETERNA软件作调和分析,两主波(O1和M2)的重力潮汐参数(振幅因子和相位滞后)为:O1:1.1788±0.0006,-0.5975°±0.028°;
短句来源
     Poisson Gravimetric Boundary Value Problems
     Poisson重力边值问题
短句来源
     1∶1 000 000 regional gravimetric survey in the east-central part of the Qinghai-Xizang Plateau
     青藏高原中东部1∶100万区域重力调查成果与进展
短句来源
     In this paper, the gravimetric geoid of the continental edge in south eastern of China is calculated based on the Stockes' theory using the 30″×30″ digital topographic model, the 11822 gravity data from south eastern of China and the geopotential model WDM94, and processing the remote field effect with the low pass filter. Comparing with the GPS leveling of Fujian and Shandong province, the accuracy is ±0.124m and ±0.062m respectively.
     利用我国东南地区11822个重力数据、30″×30″数值地形模型和WDM94重力位模型,以Stokes理论为基础,采用低通滤波方法处理远区影响,计算了中国东南陆缘2.5′×2.5′格网重力大地水准面,其结果与福建、山东的GPS水准相比较,精度分别为±0.124m和±0.062m。
短句来源
     In the control group, there was a positive correlation (r=0.987 0, P<0.05) between the values of EVLW as measured by single-indicator dilution and by gravimetric measurements.
     对照组单指示剂法和重力法测定的EVLW呈显著正相关(r=0.9870,P<0.05);
短句来源
更多       
  “gravimetric”译为未确定词的双语例句
     When the length of the data is 90 days, the accuracy of determination of the gravimetric factor δ of the main waves M2, S2, N2, K1, O1 is about 1% the accuracy of determination of phase difference of the same main wave is about 0.°5
     当资料长度取为90天时,对 M_2、S_2、K_1、O_1,五个波群来说,确定δ的精度约为1%,确定位相差的精度为0.°5.
短句来源
     The test results are as follows:(1) For method of Lecolazet, the accuracy of determination of gravimetric factor δ of the main waves M2, S2, N2, K1, O1, is about 1%, while the accuracy of determination of the phase difference of the same main wave is about 1°.
     检验结果是:1)勒卡拉兹方法对 M_2、S_2、N_2、K_1和 O_1五个主要波群来说,确定δ的精度约为1%,确定相位差的精度约为1°.
短句来源
     With the hot diglycol, Na2SO4 is removed from the Lomar Pw,then Na2SO4 will be measured with gravimetric method that BaCl2 prelipitaties SO42-.
     用热的二甘醇使Na2SO4从Romar PW中分离出来,然后用BaCl2沉淀SO42-,重量法测定Na2SO4含量。
短句来源
     Inquiry into Causes for Difference in Results of Potassium Content in Compound Fertilizers by SN/T 0736.7 and GB/T 5874 Gravimetric Analysis
     SN/T0736.7和GB/T5874重量法测定复合肥中钾含量结果的差异成因探讨
短句来源
     LiNi0.7Co0.3O2 obtained by this process consists of even and particular granule that has a diameter of 10 μm, and its gravimetric specific capacity is up to 177 mAh/g.
     通过本工艺制得的LiNi0.7Co0.3O2颗粒均匀细致,平均粒径约为10μm,放电初始比容量达177mAh/g。
短句来源
更多       
查询“gravimetric”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
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  gravimetric
Fourier transform infrared spectroscopy and thermal gravimetric analysis were used to detect the imidization and thermolysis processes of PAA/PU blends under thermal treatment.
      
The precursor was studied by thermo-gravimetric and differential scanning calorimetry (TG-DSC).
      
The thermal decomposition of CeO2 nanocrystalline precursor prepared by chemical precipitation method was investigated using thermo-gravimetric/differential scanning calorimetry (TG/DSC) and X-ray powder diffraction (XRD).
      
Conductometric and Gravimetric Studies of the Kinetics of Graphite Sedimentation in Aqueous Dispersions
      
The kinetics of graphite sedimentation in aqueous dispersions is studied using conductometric and gravimetric techniques.
      
更多          


This communication reports the results of a study of the gravimetric deter- mination of lead as normal phosphate, known as Vortmann and Bader method, which has been recently examined by Hubicki and Rys. According to our findings, tartaric acid should be added only when antimony is present. With the addition of tarearic acid unusual large excess of precipitant as suggested by Vortinann and Bader is required for complete precipitation. The suitable pH range for the precipitation of tertiary lead phosphate...

This communication reports the results of a study of the gravimetric deter- mination of lead as normal phosphate, known as Vortmann and Bader method, which has been recently examined by Hubicki and Rys. According to our findings, tartaric acid should be added only when antimony is present. With the addition of tarearic acid unusual large excess of precipitant as suggested by Vortinann and Bader is required for complete precipitation. The suitable pH range for the precipitation of tertiary lead phosphate is 6.5 to 10. Below pH 6.5, the precipitation will be incomplete, owing apparently to the formation of acid phosphate(s). Beyond pH 10, no experiment has been made, because no advantage is gained by working in such alkaline media. The concentration of the precipitant in sdlution after reaction should be within 0.00085-0.0033 molar in order to obtain good results. The precipitates may be ignited at any temperature from 650℃ up to at least 900℃. The practice of drying the pre- cipitates at 130℃ to constant weight suggested by Hubicki and Rys should be discarded, since the precipitates still contain noticeable amounts of water after drying to constant weight at that temperature. It is preferred to use the method of precipitation from homogeneous solution. With this technique in practice dense, crystalline and easily filterable precipitates are obtained; and small quantity of lead, as low as 5 mg, may be determined satisfactorily. The effect of presence of some alkali and ammonium salts has also-been studied.

本文報告用磷酸根測定鉛重量法的各種適宜條件。溶液的pH值應在6.5至10之間。過剩沉澱劑在溶液中的濃度應為0.00085——0.0033M。沉澱應在650℃-900℃間灼燒之;如在130℃乾燥,則沉澱內的水份不能完全驅盡。均勻沉澱可改善沉澱的性質,並可测定少至5毫克的鉛。如溶液中無銻,則不必加酒石酸。

An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand the...

An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand the magnesium content determined from the electrophotometric reading.The time required for each determination is approximately 5 hours. The effect of interfering elements which are likely present in cast iron such as manganese, silicon,phosphorus, aluminum, copper, nickel and vanadium as well as ammonium ion and alkali and alkaline earth metals has been studied and discussed.It has been shown that manganese, silicon, aluminum,copper,nickel,iron and ammonium ions can be removed down to such low values as to cause no significant interference.Phosphorus under 0.4% has no appreciable effect.Vanadium is not separated in the present method,but fortunately it is usually present in insignificant amounts in ordinary cast iron.The effect of calcium is compensated by the introduction of saturated calcium sulphate solution before the titan yellow addition. Potassium and sodium have no appreciable effect when present in small amounts. The results obtained by the present method for the determination of magnesium in 11 known samples are good,the average difference being 0.002% in a range of 0.000% to 0.140% Mg.The data obtained by the present method are also in good agreement with those obtained by gravimetric methods On seven nodular iron samples made by the Metallurgical Division of our Institute.A detailed procedure for the determination of magnesium in cast iron has been suggested and included in this paper.In view of its rapidity and fair accuracy,the new photometric method might prove useful for the purpose of control in a nodular iron foundry.

本文报告将地丹黄比色法应用於测定铸铁中之镁的试验结果.如将铁、锰、铝、矽等干扰物质预先除去,则镁的测定并无困难.依照本文所擬的方法分析,所需时间约为五小时,较重量法迅速得多.

Modifications of the method of potentiometric titration with chromous chloride in thedetermination of tungsten and molybdenum have been described.The optimum experimentalconditions are:(a) for tungsten,the concentration of HCl should not be less than 10 N and thetungsten concentration,not less than one milli-equivalent in 160 ml; (b) for molybdenum,the solution to be titrated should ,be 6 N in HCl and contain about one gram of KCNS in 80 ml.The addition of KCNS gives a sharp potential jump at the end-point.Under...

Modifications of the method of potentiometric titration with chromous chloride in thedetermination of tungsten and molybdenum have been described.The optimum experimentalconditions are:(a) for tungsten,the concentration of HCl should not be less than 10 N and thetungsten concentration,not less than one milli-equivalent in 160 ml; (b) for molybdenum,the solution to be titrated should ,be 6 N in HCl and contain about one gram of KCNS in 80 ml.The addition of KCNS gives a sharp potential jump at the end-point.Under such conditions thetitration may be carried out with non-compensation method at room temperature.Themethod has been applied to the determination of tungsten in wolframite and scheelite,and ofmolybdenum in molybdenite with results agreeing with those obtained by gravimetric methods.Such a determination may be accomplished within three hours.

测定钨精砂中的钨和辉钼矿中的钼可用氯化亚铬的电位滴定法来代替经典的重量法。测定钨的实验条件是盐酸浓度保持10N 左右,每160毫升钨的含量不低于1毫克当量。测定钼的条件是盐酸浓度为6N,加入硫氰酸钾约为1克/80毫升。在上述实验条件下,钨、钼都可以用不补偿法在室温下滴定。分析结果基本上与重量法符合,而时间缩减为3小时。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关gravimetric的内容
在知识搜索中查有关gravimetric的内容
在数字搜索中查有关gravimetric的内容
在概念知识元中查有关gravimetric的内容
在学术趋势中查有关gravimetric的内容
 
 

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