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rate of decomposition
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  分解速率
     A STUDY ON THE RATE OF DECOMPOSITION OF F_(22) (FREON-22) IN ALKAINE SOLUTION
     F_(22)在碱液中分解速率的研究
短句来源
     The relative rate of decomposition varied obviorsly in different seasons and the rate in July was found to be 1.5 times of that in March.
     季节之间相对分解速率变化较大,7月份相当于3月份的1.5倍;
短句来源
     The relativc rate of decomposition varied obviorsly in differentseasons and the rate in July was found to be 2. 6-6 times that in April or in October. Theannual changes were small and the annual relative decomposition rate in a slowly year wasnot less than 96 % of that in a fastly year.
     季节之间,相对分解速率(单位:g/d·g)变化较大,7月份最大,相当于4月份、10月份的2.6-6倍之多,年度相对分解速率(单位:g/a·g)波动不大,慢年相当于快年的96%以上。
短句来源
     For PC-602,there are no influence on the stability of sodium salicylate can be accelerate the rate of decomposition of sodium hypochlorite.
     PC-602对次氯酸钠的稳定性无影响,葡萄糖酸钠和水杨酸钠复配具有协同增效作用. 但可加速次氯酸钠的分解速率
短句来源
     The rate of decomposition was not affected by methylene blue and ethanol.
     亚甲蓝和乙醇不影响过亚硝酸根的分解速率
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  分解率
     When Fe~(3+), Fe~(2+), Cu~(2+)and Mn~(2+) were added into the bleaching solution, the rate of decomposition will increase.
     一定温度下,在漂液中加入0.005%的Fe~(3+)、Fe~(2+)、Cu~(2+)、Mn~(2+),过氧乙酸的分解率明显增大。
短句来源
     Methods Glucosamine-Cu( Ⅱ ) complex was prepared by the reaction of D-glucosamine hydrochloride with Cu2+ in aqueous solution, then added it into H2O2 solution. The concentration of H2O2 was determined by titrimetric analysis in a regular interval of time, the rate of decomposition of H2O2 was obtained in various conditions.
     方法:利用D-氨基葡萄糖盐酸盐在水溶液中与Cu~(2+)形成配合物,加入到一定浓度的H_2O_2中,在不同的条件下放置,于不同的时间测定H_2O_2的分解率
短句来源
     Using the supercritical water as the action agent,when the temperature was 400 ℃, the concentration of NaOH was 1 mol/L, the reaction time was 30 min, and the filling rate was 0.62, the rate of decomposition reached 75 %.
     采用超临界水为反应介质 ,在 4 0 0℃ ,Na OH水溶液的浓度为 1mol/ L,反应时间 30 m in,填充率为 0 .6 2时 ,基体树脂的分解率达到 75 %。
短句来源
     The rate of decomposition of ferric oxide in the slag is 95.5%,and pure degree of ferric oxide in product is 99.56%.
     烧渣中的氧化铁分解率高达 95 .5 % ,产生氧化铁纯度达 99.56 %。
短句来源
     Methods CMCS Cu 2+ complex was prepared by the reaction of CMCS with CuCl 2 in aqueous solution, then H 2O 2 added into the solution. The concentration of H 2O 2 was determined by titrimetric analysis after defferent times, the rate of decomposition of H 2O 2 was obtained in various conditions.
     方法 利用水溶性的羧甲基壳聚糖 (CMCS)在水溶液中与 Cu2 +形成 CMCS- Cu2 +配合物 ,并加入过氧化氢 ,在不同的 p H条件下放置 ,分别在不同时间取样用滴定法测定 H2 O2 的分解率
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  降解率
     On the premise that the rate of sterilization is qualified,the formulation of the experimental conditions of the fourmulation design for the compounded chlorinated disinfectant was carried out by the modified simplex method which makes the use of the rate of decomposition of the available chlorine,the rate of decomposition as a referential criterion. The results were found in 13 tests. We found the optimum formulation of the stability.
     以次氯酸钠有效氯降解率作为评价稳定性参考指标,在保证杀菌率合格的前提下,利用单纯形法对组方条件进行了优化,通过13次实验,找到了稳定性最佳的配方.结果表明:单纯形法是寻找最优配方的一种简单有效的方法.
短句来源
     The results show that the rate of decomposition increases with the lengthening of radiation time, the rate of decomposition increases with the increasing in temperature under 60 degree centigrade and the rate decreases with the increasing in temperature above 60 degree centigrade.
     结果表明:DBS的降解率随辐照时间的延长而增加; 溶液温度在低于60℃时,DBS的降解率随温度的升高而增加,高于60℃降解率随温度的升高反而降低;
短句来源
     On this basis, treating fumaric acid waste water by micro-electrolysis for several times resulted in a considerable decrease in the value of COD with the rate of decomposition being 99.33%.
     可使废水COD值显著下降,降解率依次分别为99.33%。
  “rate of decomposition”译为未确定词的双语例句
     Results Strong catalytic capability of glucosamine-Cu( Ⅱ ) complex was obtained at 30℃ pH 6. 5, the rate of decomposition was over 90% after 12h, and was almost 100% after 24h.
     结果:在30℃及pH 6.5条件下,氨基葡萄糖-Cu(Ⅱ)配合物作用12h,可使90%以上的H_2O_2降解,24h后分解几乎完全。
短句来源
     Microelements of Fe, Cu, Zn, Mn, Pb and Ni had a higher rate of decomposition than element of Cd in the litter floor.
     在枯枝落叶层的分解过程中 ,Fe、Cu、Zn、Mn、Pb、Ni分解速度比Cd快。
短句来源
     The order of maximum rate of decomposition is ORF15cm>ORF5cm>ORT5cm>CCF5cm>CCF15cm>ORT15cm,respectively.
     旺盛分解期的长短为有机4年5㎝>有机2年15㎝>有机2年5㎝>化防田5㎝>化防田15㎝>有机4年15㎝; 随着分解时间的延长,在15cm深度上,不同类型田土壤分解功能差异不显著;
短句来源
     Single-pulse Shock Tube Studies on the Reaction Rate of Decomposition of Titanium Tetrachloride
     在单脉冲激波管中研究TiCl_4裂解反应速率
短句来源
     The photo decomposition reaction of lead styphnate is a simple thermal decomposition reaction, in which light energy rise will increase the rate of decomposition reaction of lead styphnate and the decomposition reaction has clear stages at higher light energy.
     激光束能量增大能明显地提高斯蒂醋酸铅的分解反应速率,而且在较高的光能量下,分解反应出现明显的阶段性。
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  rate of decomposition
The effect of increasing rate of decomposition of gas hydrate is found as compared to the natural process unassociated with the impact of electromagnetic field.
      
The method is based on the application of the Hertz-Langmuir equation to determining the rate of decomposition in air and on the use of the third-law method for calculating the enthalpy of the process.
      
The rate of decomposition of formic acid on a glassy-carbon-Nafion-polyaniline-palladium nanoparticle composite as a function of the state and amount of polyaniline in the composite is studied.
      
The rate of decomposition weakly depends on the substituent in position 2 of the heteroring.
      
These data indicate that the rate of decomposition of hydroperoxides exceeds the rate of their accumulation.
      
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The present paper reports studies on the relative rate of decomposition of nine different oil cake-meals [soybean, peanut, sesame, rape seed, cotton seed(with and without hull), chinese tallow seed (with and without hull)]. In the course of decomposition of the different oil cake-meals, freguent measurement were made of the quantity of evolved CO_2 gas, and amount of the NH_4~+, NO_3~-, and NO_2~- nitrogen formed at the given intervals of the day. These measurement served as indices of the intensity...

The present paper reports studies on the relative rate of decomposition of nine different oil cake-meals [soybean, peanut, sesame, rape seed, cotton seed(with and without hull), chinese tallow seed (with and without hull)]. In the course of decomposition of the different oil cake-meals, freguent measurement were made of the quantity of evolved CO_2 gas, and amount of the NH_4~+, NO_3~-, and NO_2~- nitrogen formed at the given intervals of the day. These measurement served as indices of the intensity of decomposition and rate of ammonification and nitrification of the oil cake-meals that may be occur in the soil. These studies were performed in the laboratory, under room temperature condition of the summer season. All cakes were ground into meals to such particle size as to pass through a 20-mesh sieve. The cake-meals were separately mixed with cultivation soil in the proportion of one part of cake-meal to hundred parts by weight of soil. The soil used was of alluvial origin, low in organic matter and somewhat sandy in texture. It was found that decomposition of the cake-meals began soon after their application to the soil. The daily evolution of CO_2 reached its maximum for about one week. Immediately after that, the daily evolution of CO_2 declined rapidly to a such lower level and attained a rather steady declining rate after about two weeks. The trends were common in character irrespective of the kind of the cake-meals. Among the organic constituents of tile cake-meals that underwent into decomposition in the early days, nitrogeneous organic compou ads seemed to be of major importance. The production of ammonium compounds as a result of ammonification followed a trend similar to that shown by the evolution of CO_2. The maximum rate of ammonification was noticed sometime before the evolution of Co_2 had reached a maximum. The positive correlation existing between the total nitrogen content of the oil cakes and the rate of ammonification was evident. Other factors, however seemed to be also affecting the status of transformation of Nitrogen compounds. Nitrate compounds began to appear soon after ammonification had proceeded to an appreciable degree. In the course of decomposition their accumulation in the soil increased steadily with the time. Small amounts of nitrites were found under the experiment conditions which were characterized by low moisture content (25%) of the soil and meal mixtures. From the quantity of the total available nitrogen accumulated at different intervals in the course of decomposition as in the case here given, it seemed that some nitrogen might be lost through volatilization of ammonium compounds, since the soil was alkaline in reaction (the soil here used had a PH value of 7.2) Soaking the cake meals with water, lime-water, or straw-ash extract as sometimes practiced by the local farmers in some districts in Chekiang province brought about the effect of hastening ammonification and nitrification processes. But, gain in readiness of availability of the meals by this hastening effect might not compensate for the loss in total amount of available nitrogen formed. The loss was particularly evident when the cake-meals were pretreated with lime-water or straw-ash extract. It is believed that the alkaline reaction of the treated cake-meals accounts for this loss. The relative readiness of decomposition of the different oil cake-meals followed in descending order: soybean, sesame, peanut, Cotton seed (without hulls)>Cotton seed (with hulls), rape seed>Chinese tallow seed (with and without bulls). Similarly, the relative total amount of available nitrogen (including ammonium and nitrate nitrogen) formed during decomposition shows in the following order: soybean, peanut, sesame, chiness tallow seed(without hulls)>Cotton seed (with and without hulls)>rape seeds>Chiness tallow seed (with hlls).

研究了浙江省施用的九种主要餅肥在土壤中分解的情况,各种餅肥都經磨碎,并通过20孔篩。实驗証明,在夏天的温度下,餅肥施入土壤后即迅速分解,它的分解最盛时期是在一星期左右,此后即迅速下降,到二星期后,即漸趋穩定。餅肥施入土壤后,铵态氮的大量發生是在一星期以內,此后即迅速降低,轉化成硝酸态氮。硝酸态氮在一星期到二星期的时間内开始大量發生,到二星期后就漸趋穩定。土壤中有效态氮总量在各个形态轉化的过程中,有顯著的減少趋势。餅肥在施入土壤前用石灰、草灰或水处理一星期,可提早土壤中有效氮的發生,其中單用水处理的效果尤其好。实驗証明,用石灰或草灰处理餅肥,使有效态氮大量損失,而用水处理則沒有这种情况。在本实驗的条件下,各种餅肥的分解速率依次为:豆餅、芝麻餅、花生餅、棉仁餅>棉籽餅、生菜餅、熟菜餅>桕餅、青餅。各种餅肥中氮素化合物转化后所產生的有效态氮总量依次为:豆餅、花生餅、芝麻餅、青餅>棉仁餅、生菜餅、棉籽餅>熟菜餅>桕餅。

In the present investigation, water in bleaching powder was found to play a leading role in determining the stability of the latter. In order to compare the stability of various samples of bleaching powder, we determined the content of the available chlorine before and after a sample kept in a small glass-stoppered tube at 90℃ for 8 hours. The ratio of residual to the original content of available chlorine when expressed in percentage is defined as the index of stability.The samples of bleaching powder and raw...

In the present investigation, water in bleaching powder was found to play a leading role in determining the stability of the latter. In order to compare the stability of various samples of bleaching powder, we determined the content of the available chlorine before and after a sample kept in a small glass-stoppered tube at 90℃ for 8 hours. The ratio of residual to the original content of available chlorine when expressed in percentage is defined as the index of stability.The samples of bleaching powder and raw calcium hypochlorite investigated in our work contain-ed in the main the following components: Ca(Ocl)_2(S), Ca(OCl)_2·3H_2O(S), CaCl_2·6H_2O(S)and CaCl_2·Ca(OH)_2·H_2O(S). When bleaching powder or raw calcium hypochlorite was thoroughly dried under a vapor pressure of 0.1 mm. Hg at 25°, two of the components were dehydrated according to the following reactions (Figure 5): Ca(OCl)_2·3H_2O(S) = Ca(OCl)_2(S) + 3H_2O(~5mm. Hg) CaCl_2·6H_2O(S)=CaCl_2·H_2O(S) + 5H_2O(~1.0 mm. Hg) and the index of stability attained 100% (Figures 6 and 7). Water which can be removed from a sample under the above conditions is defined as removable water. By the control of amount of the removable water in a sample, the index of stability can be made to vary between 0 to 100%.If we take the percentage of the available chlorine decomposed in an hour at 90 as the rate of decomposition (D %/hr.), the latter seemed to vary linearly with the amount of removable water (W %) (Figure 8). When the samples were heated in a stoppered tube to 90° from 25°, the removable water probably redistributed according to the following scheme: xCa(OCl)_2(S) + y Ca(OCl)_2·3H_2O(S) + z CaCl_2·6H_2O(S) 25° xCa(OCl)_2(S) + (y + (5z)/3) Ca(OCl)_2·3H_2O(S) + z CaCl_2·H_2O(S) 90° Inasmuch as the thoroughly dried samples did not decompose considerably even at 90°, the decomposition of OCl~- seemed to take place almost exclusively in the phase Ca(OCl)_2·3H_2O(S). The linear relationship of D vers. W indicated that the decomposition rate of a sample varied linearly with its content of the component Ca(OCl)_2·3H_2O(S) at 90°. In the light of the above results, an explanation was proposed to account for the decomposition of bleaching powder under the conditions of storage.

本工作肯定,水在漂白粉的稳定性问题中具有极其重要的作用.漂白粉和漂粉精样品在0.1毫米汞柱的蒸气压下可脱去的水称为可脱水.在90°下八小时后样品中有效氯量占原有效氯量的百分数称为其稳定度.稳定度测值指出,样品的可脱水率从0%递增时,其稳定度则从100%递减至0%.根据吸水率-蒸气压图等数据,样品的可脱水主要分布在物相Ca(OCl)_2·3H_2O(S)和CaCl_2·6H_2O(S)中,而在90°下,全部可脱水则集中至前一物相.样品有效氯成分的分解主要在Ca(OCl)_2·3H_2O(S)中,而在Ca(OCl)_2(S)中分解很少.稳定度的数据指出,在90°下,样品有效氯分解率与其中可脱水率成正比,从而亦与其中物相Ca(OCl)_2·3H_2O(S)的含率成正比. 根据上述,作者并从生产实践的意义讨论了漂白粉的稳定性问题.

1. The copolymer of oxygen and methyl methacrylate ("peroxide") waspurified through chromatography.2. The influence of the temperature and the additives upon the rate of theoxidation of MMA were studied. The free radical nature of the reaction wassubstantially proved.3. The rate of decomposition of the "peroxide" in solution was studied, andthe activation energy of the unimolecular decomposition was indirectly calculatedto be 22±1 Kcal/mol.4. The "peroxide" has been used to initiate the polynerization...

1. The copolymer of oxygen and methyl methacrylate ("peroxide") waspurified through chromatography.2. The influence of the temperature and the additives upon the rate of theoxidation of MMA were studied. The free radical nature of the reaction wassubstantially proved.3. The rate of decomposition of the "peroxide" in solution was studied, andthe activation energy of the unimolecular decomposition was indirectly calculatedto be 22±1 Kcal/mol.4. The "peroxide" has been used to initiate the polynerization of MMA.The polymer so obtained possessed very high molecular weight.

1.测定甲基丙烯酸甲酯氧化时,温度及各种加入物如硬脂酸钴、对苯醌、三聚甲醛、丙酮酸甲酯、偶氰双异丁腈及其本身的“过氧化物”等对氧化速度的影响。从而进一步证明此反应的游离基链锁反应的特性。 2.测定共聚[过氧-甲基丙烯酸甲酯]在苯及在醋酸乙酯溶液内各种温度时的分解速度。并用间接方法,测知其单分子分解的活化能为22±1仟卡/克分子。 3.肯定该“过氧化物”具有引发甲基丙烯酸甲酯聚合的能力。观察以此作引发剂的聚合速度及聚合过程中聚合物分子量的变化,并注意到以此引发所生成的聚合物具很高的分子量。

 
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