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heat     
相关语句
  热量
    Simulation Design and Management for Heat Consumption and Ventilation in the Dryer Section of Paper Machine
    造纸机干燥部耗热量与通风量的模拟设计和管理
短句来源
    A Study of Jet System of Recovery Concerning Steam Condensate Heat
    蒸汽冷凝水热量回收喷射系统的研究
短句来源
    PA6 was flame retarted by Mg(OH)_2/poly(aminopropylphenyl) silsesquioxane(PAPSQ),the LOI of the flame retardant PA6 was tested,the heat release rate (HRR),total heat release (THR) and mass loss rate (MLR) of PA6 were tested by means of cone calorimeter,and the morphology of the residual char was observed by means of SEM.
    采用氢氧化镁[Mg(OH)_2]复配聚氨丙基苯基倍半硅氧烷(PAPSQ)阻燃改性尼龙6(PA6),测定了阻燃PA6的极限氧指数(LOI),利用锥形量热仪测定了阻燃PA6的释热速率、总释热量、质量损失速率等多种参数,并用扫描电镜(SEM)观察了阻燃PA6残炭的形貌。
短句来源
    Heat Balance Calculation for Fluidized bed Cooler
    流化床冷却器热量平衡计算
短句来源
    Studies on Curing Behavior of Castor Oil-based Polyurethane(Ⅱ) —NCO Content and Heat Changes during Curing
    蓖麻油基聚氨酯灌封胶的固化行为研究(Ⅱ)固化过程中异氰酸根含量变化和热量变化
短句来源
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  加热
    Heating of Hot Runner Mould and Heat Insulation
    热流道模具的加热及隔热保温
短句来源
    HEATING TECHNOLOGY BY USE OF HEAT MEDIUM IN THE PRODUCTION OF ALKYD RESIN
    醇酸树脂生产的热媒加热技术
短句来源
    The Mo-V-Te-La catalysts were prepared by hydrothermal method and then dried through microwave heat method.
    采用水热合成法并使用微波加热干燥制备了Mo-V-Te-La复合金属氧化物催化剂。
短句来源
    Based on the designed 0.4 m2 thin film evaporator,the influence of the structure parameters such as the clearance between blade and wall,number of blade,length-diameter ratio on the evaporation length(effective evaporation area) and the heating section film heat transfer coefficient was discussed using the CFD software CFX4.4 with different viscous liquid as feed liquid,which primarily laid a foundation for optimization design of thin film evaporator.
    以自行设计的0.4 m2薄膜蒸发器为模拟对象,采用CFD分析软件CFX4.4探讨刮板与筒壁间隙、刮板数、筒体长径比等结构参数对薄膜蒸发器内不同粘性料液的蒸发段长度(有效蒸发面积)和加热段膜内给热系数的影响,研究结果初步为薄膜蒸发器优化参数设计奠定基础。
短句来源
    Design of heat tracing pipe on cylindrical shell body
    圆筒壳体上半管加热管的设计
短句来源
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  传热
    Studies on Heat Transfer and Evaporation and Applications of Wiped Thin-film Evaporator with an Inner Condenser
    内冷式刮膜薄膜蒸发器传热蒸发与应用研究
短句来源
    Mechanism and Performance Analysis of High Efficiency Heat Recovery Equipment
    高效余热回收装置传热机理及性能分析
短句来源
    HEAT TRANSFER CALCULATION FOR MULTICOMPONENT MULTIFLUID HEAT EXCHANGER WITH PHASE CHANGE
    多组分多股流相变换热器的传热计算
短句来源
    DIRECT CONTACT HEAT TRANSFER
    直接接触传热
短句来源
    CALCULATION OF HEAT TRANSFER AND FLOW RESISTANCE OF SPIRAL PLATE HEAT EXCHANGERFOR GAS-LIQUID
    螺旋板式换热器气-液换热时流阻及传热计算
短句来源
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  耐热
    HEAT OXYGEN AND OZONE AGING RESISTANCE PROPERTIES OF OIL-EXTENDED POLYBUTADIENE RUBBER VULCANIZATES
    充油聚丁二烯硫化胶的耐热氧和耐臭氧老化性能
短句来源
    THE HEAT RESISTANCE HIGH INDEX JD SERIES OPTICAL PLASTICS
    耐热高折射JD系列光学塑料
短句来源
    Study on CY-22 Room Temperature Curing Heat Resistant Epoxy Adhesive
    CY-22室温固化耐热环氧胶粘剂的研制
短句来源
    A STUDY ON HEAT RESISTANT PUR-PIR FOAMED PLASTICS
    耐热PUR—PIR泡沫塑料的研究
短句来源
    The Development of J-91 Heat Resistant Epoxy Novolac Adhesive
    J-91耐热性环氧化酚醛胶粘剂的研制
短句来源
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      heat
    As applications, the wave equation on?+ × ?+ and the heat equation in a semi-infinite rod are considered in detail.
          
    In a much cited article, Yau [5] proved that when the Ricci curvature is bounded uniformly below, then the only bounded solution to the heat equation ?tμ=Δμ on [0, ∞) × M which vanishes at t=0 is the one which vanishes evarywhere.
          
    Well-posedness of a semilinear heat equation with weak initial data
          
    In the first part the initial value problem (IVP) of the semilinear heat equation with initial data in is studied.
          
    For the analogs of the heat and wave equation, we give algorithms for approximating the solution, and display the results of implementing these algorithms.
          
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    A colorimetric method for the determination of antimony in the range 0.1 to 3.0μg per milliliter blood is described. The time needed for the destruction of organic matter is shortened to 8—12 minutes. The proposed method is as follows: Accurately transfer 1 ml of blood sample to a hard glass test tube (25×150 mm.), to which 1 ml of conc. HNO_3 is then added. Heat gently with a small flame till the solution changes to amber color. Add 0.5 ml conc. H_2SO_4 and heat again carefully until dense white fume...

    A colorimetric method for the determination of antimony in the range 0.1 to 3.0μg per milliliter blood is described. The time needed for the destruction of organic matter is shortened to 8—12 minutes. The proposed method is as follows: Accurately transfer 1 ml of blood sample to a hard glass test tube (25×150 mm.), to which 1 ml of conc. HNO_3 is then added. Heat gently with a small flame till the solution changes to amber color. Add 0.5 ml conc. H_2SO_4 and heat again carefully until dense white fume is evolved. If the solution is not clear, add a few more drops of HNO_3 and heat repeatedly till a clear colorless solution is obtained. Cool, add 1 ml NaCl solution and 0.5 ml NaNO_2 solution, shake for 2 minutes, then add 1 ml of urea solution. Transfer the mixture to a separatory funnel containing 10.0 ml benzene. Wash the test tube with three portions (5 ml) of distilled water, add 10 drops of malachite green reagent solution and shake the mixture immediately for 5 minutes. Separate the benzene layer in a centrifuge tube and centrifuge 3 minutes to separate the suspended droplets of water. Transfer the benzene solution into a 10 cm cell and measure the extinction with an Ilford 607 filter, using benzene as blank.

    作者等提出了血液中有机质的快速破坏法及采用孔雀綠比色法测定血样中微量锑。本法破坏血样所需时間为10分鐘左右,所需血样为1毫升。致謝:本文承儲俊民同志供給一部分資料及协助,謹此志謝。参加此項工作者尚有楊松成同志。

    When sipeimine was fused with potassium hydroxide at various temperatures (260°to320℃),there could be isolated only one and the same crystalline product.Based upon itsempirical formula,physical and chemical properties and those of its derivatives,it was provedto be identical with sipeimone.Pyrolysis of sipeimine resulted only in the recovery of theoriginal substance.Upon treatment with a mixture of concentrated hydrochloric acid and glacial aceticacid,sipeimine gave chlorosipeimine,C_(27) H_(42) O_2NCl,colorless...

    When sipeimine was fused with potassium hydroxide at various temperatures (260°to320℃),there could be isolated only one and the same crystalline product.Based upon itsempirical formula,physical and chemical properties and those of its derivatives,it was provedto be identical with sipeimone.Pyrolysis of sipeimine resulted only in the recovery of theoriginal substance.Upon treatment with a mixture of concentrated hydrochloric acid and glacial aceticacid,sipeimine gave chlorosipeimine,C_(27) H_(42) O_2NCl,colorless prisms,m.p.206° (dec.),[α]_D~(17°)-19. 37°(CHCl_3) ,as the main product.Chlorosipeimine could not be acetylated,and did notchange upon refluxing with zinc dust in glacial acetic acid,refluxing with silver acetate inmethanol,or heating with 5% aqueous potassium hydroxide.Refluxing with 5% alcoholicpotassium hydroxide converted it into anhydrosipeimine,C_(27) H_(41) O_2N,colorless long prismaticneedles,m.p.170°,[a]_D~(16°)+2. 45°(CHCl_3) .Anhydrosipeimine resisted hydrogenation in thepresence of palladium-charcoal or Adams platinum oxide catalyst in neutral or acidic medium,or in the presence of Raney nickel in alcohol at room temperature.On heating with concentrated alcoholic potash,sipeimine was transformed into an isomer,isosipeimine,colorless fine soft needles,m.p.228°,[a]_D~(16°)+12. 19°(CHCl_3) .Its ultravioletspectra did not show characteristic carbonyl absorption band.

    1. 西贝素在不同温度下与氢氧化钾共熔,仅得一种产物,证明为西贝酮。2. 西贝素用浓盐酸处理得氯代西贝素 C_(27) H_(42) O_2NCl,氯代西贝素用氢氧化钾醇液处理得脱水西贝素 C_(27) H_(41) O_2N。3. 西贝素用浓氢氧化钾醇液或乙醇钠的醇溶液处理得异西贝素。

    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.

     
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