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thermo gravimetric
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  热重分析
     The kinetics of the LaCoO_)3.δ) synthesis in solid-state reaction between La_2O_3 and Co_3O_4 powder mixture was investigated using isothermal thermogravimetric measurements at 830℃, 860℃ and 890℃respectively.
     用等温热重分析方法在830℃、860℃和890℃研究了La_2O_3和Co_33O_4粉末反应合成LaCoO_(3-δ)的动力学。
     The effects of CO_2 and NH_3 on the structure and superconductivity of YBa_2Cu_3O_(7-x) have been studied by the means of thermogravimetric analysis (TGA), resistance measurement and X-ray diffraction.
     以热重分析(TGA)、电阻测量和X射线衍射分析等方法,研究了CO_2与NH_3对YBa_2Cu_3O_(7-x)超导体结构稳定性及超导,电性的影响。
短句来源
     In anhydrous solvents: [Sc(SSCN(C_2H_5)2)_3] and (C_2H_5)_2 N~+H_2[Y(SSCN(C_2 H_5)_2)_4] were prcpared, and caractcrized by elemental analy ses, IR and UV spectra, molar conductances, thermogravimetric and differential thermal analyses, and the solubility in some general solvents.
     在无水溶剂中合成了[Sc(SSCN(C_2H_5)_2)_3]及(C_2H_5)_2NH_2·[Y(SSCN(C_2H_5)_2)_4]~-,并通过元素分析、红外光谱、紫外光谱、差热——热重分析和摩尔电导等研究了配合物的性质。
短句来源
     A new binuclear cluster [Cu_2(dmpytaa)_4(CH_3OH)_2]·3CH_3OH has been synthesized, and characterized by elemental analysis, infrared spectra, ultraviolet-visible spectra, thermogravimetric analysis and X-ray diffraction method, where Hdmpytaa=[4,6-dimethyl-2-pyrimydinyl)thio] acetic acid.
     合成了一个新的4,6-二甲基-2-嘧啶硫乙酸与铜的双核簇合物[Cu2(dmpytaa)4(CH3OH)2]·3CH3OH(Hdmpytaa=4,6二甲基2嘧啶硫乙酸),通过X射线衍射、红外光谱、紫外光谱、热重分析对其进行了结构表征。
短句来源
     The solid complex of uranyl nitrate with dibenzo-24-crown-8 (DB24C8) , having a 2:1 stoichiometry [UO2(NO3)2]2·DB24C8·4H2O, has been synthe-sized in anhydrous acetonitrile solution and characterized by elemental analysis, IR and UV spectra, thermogravimetric(TG) and differential thermal analyses, X-ray powder diffraction, and so on.
     本文报道了硝酸铀酰与DB24C8的固态配合物的合成,测定其组成为[UO_2(NO_3)_2]_2·DB24C8·4H_2O,并对其红外光谱、紫外光谱、差热-热重分析、摩尔电导及X射线粉末衍射等性质进行了研究。
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  热重
     The thermogravimetric data of Cu[2 (COO)C 6H 4CONH 2 C 6H 4Cl] 2 is calculated by Zsako, Coats & Redfern and MacCallum & Tammer methods.
     对 Cu[2 - (COO) C6H4 CONH- 2 - C6H4 Cl]2 配合物的热重数据运用 Zsako法、Coats和 Redfern法、Mac Callum和 Tammer法进行了计算。
短句来源
     The equilibria of the system MoO_3-MoO_2-H_2O-H_2 were investigated usinga specially designed thermogravimetric apparatus under the control of atmospheres.
     使用自行设计的受控气氛热重装置研究了MoO_3—MoO_2-H_2O—H_2系平衡.
短句来源
     Thermogravimetric Analysis of Coal-char under O_2/CO_2 Atmosphere
     O_2/CO_2气氛下煤焦热重试验研究
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     Pyrolysis of Huangxian oil shale with five particle sizes range(<0.076mm,0.3—0.45mm,0.9—1.0mm,1.5—2.0mm and 3.0—3.5mm)has beeninvestigated by thermogravimetric analyzer.
     采用热重装置对于<0.076mm,0.3—0.45mm,0.9—1.0mm,1.5—2.0mm及3.0—3.5mm 五种粒度范围的黄县油页岩的热分解过程进行了考察。
短句来源
     Using the hydro-thermal method,Zr(W,Mo)2O7(OH)2(H2O)2 is prepared. The thermogravimetric and differential thermal analysis (TG-DTA) is employed to determine the transition of ZrW2-xMoxO8, and the results show the crystalline temperature of ZrW2_xMxO8 decreases with the x value growth.
     采用水热法合成了Zr(W,Mo)2O7(OH)2(H2O)2,热重-差热分析(TG-DTA)表明,Zr(W,Mo)2O7(OH)2(H2O)2的DTA曲线上有明显的ZrW2-xMoxO8结晶转变点,且结晶点随Mo含量的增加而降低.
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  热失重
     THERMOGRAVIMETRIC ANALYSIS OF FERRITE MFe 2O 4 WITH HYDROGEN REDUCTION AND PREPARATION CONDITION OF OXYGEN DEFICIENT MFe 2O 4 δ
     铁酸盐MFe_2O_4的氢气还原热失重分析和氧缺位铁酸盐MFe_2O_(4-δ)的制备条件
短句来源
     Thermogravimetric analysis indicated that the composite membranes were thermal stable up to 400 ℃ for the PBI/ZrP/PSF system and 230 ℃ for the PBI/SPSF(H) system,respectively.
     热失重分析表明,复合膜PB I/ZrP/PSF和PB I/SPSF(H)的热稳定性可分别达400和230℃。
短句来源
     Theresin cured quickly above 150℃, and its curing heat enthalpy was -179.5J/g. The resin cured at 170℃ for 5h had the completely same thermogravimetric curve as cured at 210℃ for 4h.
     该树脂在150℃以上固化迅速,固化热焓达—179.5J/g,在170℃固化5h与在210℃固化4h有完全相同的热失重曲线。
短句来源
     Curing process of CF/PU composite and the factors which influence the dynamic mechanical properties of CF/PU system were further investigated by means of TBA,DMS and Thermogravimetric Analyzer.
     本工作借助于TBA、DMS、热失重曲线测试等方法,对CF/PU复合材料的固化过程及影响其动态力学性能的因素进行了进一步研究。
短句来源
     Sunflower seed husk with particle size of 0.154~0.28 mm pyrolysis weight loss behaviour was studied by thermogravimetric analysis(TG) at different heating rates(5,10,20,30℃/min).
     采用热重分析法(TG)在不同升温速率下(5、10、20、30℃/m in)对粒径为0.154~0.280 mm向日葵籽壳热解的热失重行为进行了研究。
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  “thermo gravimetric”译为未确定词的双语例句
     Thermogravimetric Analysis Study on Variation of Oxygen Content and Oxygen Permeability of BaRE(Cu_(0.5)Fe_(0.5))_2O_(5+δ)
     热重法研究BaRE(Cu_(0.5)Fe_(0.5))_2O_(5+δ)的氧含量变化及其透氧性能
短句来源
     Synthesis of Transition Metal Chalcogenide [M(en)_3]_2Sn_2Se_6(M=Mn,Zn) and Studies of Thermogravimetric Properties
     [M(en)_3]_2Sn_2Se_6(M=Mn,Zn)的制备及其热稳定性
短句来源
     K_6Z(H_2O)MnW_(11)O_(39)·xH_2O(Z = Zn, Ni)and K_(13)Ln(MnW_(11)O_(39))_2·xH_2O (Ln = La,Nd)were prepared and characterized by spectral and thermogravimetric analyses.
     本文合成了以11-钨锰杂多阴离子为配体的4个配合物:K_6Z(H_2O)MnW_(11)O_(39)xH_2O(Z=ZD、Ni)和K_(13)Ln(MnW_(11)O_(39))_2·xH_2O(Ln=La、Nd)。
短句来源
     The reaction of Si 3N 4 ceramics with 2% Cl 2/20%O 2/Ar environment at 1150℃ and 1350℃ was studied with thermogravimetric analysis and surface analysis method.
     使用thermogravimetric分析和表面分析法,对2%Cl2/20%O2/Ar环境中Si3N4陶瓷在1150℃和1350℃时的化学反应进行了研究。
短句来源
     The thermal decomposition of Daphnetin-Cu(Ⅱ)complexes(CuD· 2H_2O,Na_2CuD_2·4H_2O)has been studied with thermogravimetric analysis (TG— DTG).
     应用热重法(TG—DTG)研究了瑞香素与金属铜配合物(CuD·2H_2O、Na_2CuD_2·4H_2O)的热分解行为,发现瑞香素与铜配合物的热稳定性比配体的热稳定性要高.
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  thermo gravimetric
Their physicochemical properties were investigated by X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC), and thermo gravimetric analysis (TGA).
      
Thermal properties of the transparent hybrid materials were investigated by Differential scanning calorimeter (DSC) and Thermo gravimetric analysis (TGA) in order to ascertain their glass transition temperature (Tg) and thermal stability behaviour.
      
The FTIR and thermo gravimetric analysis (TGA) clearly show complete densification (density = 2.2 gm/cm3) of the gels around 1000°C.
      
The gel was examined by differential thermal analysis, thermo gravimetric analysis, FTIR spectroscopy and X-ray diffraction analysis.
      
The precursor gel was characterized by Differential Thermal Analysis (DTA)/Thermo Gravimetric (TG), IR and X-ray Diffraction study (XRD).
      
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The thermo-stability of K_2TaF_7 in air and argon atmosphere was investigated by means of thermo-differential, thermo-gravimetric and chemical analyses and also X-ray powder diffraction method. An obvious heat-absorbing effect was observed at 218°±3℃ with the appearance of break-up of larger crystals. The melting point of K_2TaF_7 was measured to be 730°±3℃. During the course of heating, by the action of moisture in air, K_2TaF_7 was hydrolyzed into K_2TaO_2F_3 which is soluble in molten...

The thermo-stability of K_2TaF_7 in air and argon atmosphere was investigated by means of thermo-differential, thermo-gravimetric and chemical analyses and also X-ray powder diffraction method. An obvious heat-absorbing effect was observed at 218°±3℃ with the appearance of break-up of larger crystals. The melting point of K_2TaF_7 was measured to be 730°±3℃. During the course of heating, by the action of moisture in air, K_2TaF_7 was hydrolyzed into K_2TaO_2F_3 which is soluble in molten K_2TaF_7 and thus affects its melting point. This might throw light on the disagreement of the melting points of K_2TaF_7 determined by the various authors. The end product of hydrolysis of K_2TaF_7 was identified to be KF and KTaO_3 (potassium meta-tantalate). Finally, the different stages of hydrolytic reaction of K_2TaF_7 and its relation with various temperatures were discussed.

用热差分析、热重分析、化学分析及X射线粉末衍射法研究了K_2TaF_7在空气中和氩气氛中加热时的行为.发现在218°±3℃,有一显著的吸热效应,同时发生晶体破碎.测得K_2TaF_7的熔点为730°±3℃.当加热时,K_2TaF_7同空气中的水气起水解作用,水解产物能溶于K_2TaF_7熔体而影响其熔点.这可能是过去测定的熔点不一致的原因.确定了水解最终产物为氟化钾及偏钽酸钾.最后,讨论了水解反应的步骤及其与溫度的关系.

Multiple transitions, inoludig both physical transitions and chemical transforma-tions, have been investigated for five moldable polyimides of different structures(Table 1)with programmed thermal cycle on a torsional braid apparatus constructed in our laboratory. The thereto-mechanial spectra of poly(ketone-imide)have been analyzed. It is able to distinguish the following changes: the glass transition(T_0), its changes after ring closure and crosslinking reaction(T_, T_),the secondary transition in glassystate(T_β),...

Multiple transitions, inoludig both physical transitions and chemical transforma-tions, have been investigated for five moldable polyimides of different structures(Table 1)with programmed thermal cycle on a torsional braid apparatus constructed in our laboratory. The thereto-mechanial spectra of poly(ketone-imide)have been analyzed. It is able to distinguish the following changes: the glass transition(T_0), its changes after ring closure and crosslinking reaction(T_, T_),the secondary transition in glassystate(T_β), and chemical transformations such as ringolosure reaction(T_(r1)), crosslinking reation(T_(r2))and decomposition reaction(T_d),etc. The thereto-mechanical spectra of five polyimides after heat treatment at 300℃ have been compared. From the examination of the influence of the chemical structure on T_ it shows the value of T_ increses with the increase in rigidity of the polymer chain. The average value of the ratios T_β(°K)/T_(°K) for four polyimides shows to be 0.70. The poly(diester-inside)and poly(alicyclic-imide)exhibits peculiarity in their thermo-mechanical spectra. By X-ray diffraction analysis, it reveals that the poly-(diester-imide)can form higly oriented structure. By thermo-gravimetric analysis, it shows that the poly(alicyclic-imide)has the poorest heat tability. A baseline shift of the oscillating curve has been observed. Such shift is even more apparent in chemical than in physical changes.

我们用自制的扭辫分析仪对结构不同的五种可熔性聚酰亚胺(见表1)按照程序控温进行了扭辫分析。 (1)对聚(酮-酰亚胺)的热力谱进行了分析,能比较明确区别出玻璃化转变(T_9)及其经闭环、交联反应后的改变(T_(91)、T_(92)),玻璃态中的次级转变(T_β),以及环化反应(T_(r1)),交联反应(T_(r2))与分解反应(T_d)等化学转化。 (2)对五种聚酰亚胺经300℃热处理后的热力谱进行了比较,考察化学结构对T_(91)的影响,T_(91)之值随高分子链刚性的增高而增高。其中四种试样的Tβ(°K)/T_(91)(°K)比值的平均值为0.70。 (3)聚(双酯-酰亚胺)及聚(脂环-酰亚胺)在热力谱上显现特殊性。X-衍射表示聚(双酯-酞亚胺)能形成高度有序的结构;热重分析表示所测样品中聚(脂环-酰亚胺)热稳定性最差。观察到振动曲线的基线飘移,在化学转化时的飘移程度比物理转变时的大。

The formation conditions of silicon nitride in mixture gas of N2-H2-H2O and the effect of oxygen on nitration process are discussed according as the thermodynamic calculation for Si-N-O system. The microstructural analysis of nitrided samples is performed by optical microscopy, scanning electron microscopy and x-ray diffraction. It is observed that the silicon nitride is composed of following phases.α-Si3N4, β-Si3N4 and residual silicon, and the porosities. The kinetics of silicon nitridation is invstigated...

The formation conditions of silicon nitride in mixture gas of N2-H2-H2O and the effect of oxygen on nitration process are discussed according as the thermodynamic calculation for Si-N-O system. The microstructural analysis of nitrided samples is performed by optical microscopy, scanning electron microscopy and x-ray diffraction. It is observed that the silicon nitride is composed of following phases.α-Si3N4, β-Si3N4 and residual silicon, and the porosities. The kinetics of silicon nitridation is invstigated by means of thermo-gravimetric analysis in mixture gas N2-H2-H2O ranged from 1603 to 1675°K as PN2= 8×10-1 atm, PH2=2×10-1 atm. and PH2O = 2×10-7atm. It is considered that the rate controlling step of nitridation process is a diffusion procedure of passing nitrogen through the nitride shell which formed on silicon surface, and so a model enabled to explain the mechanism of diffusion may be proposed. The activation energy for diffusion has been evaluated as 148,000 cal/mol.

根据Si—N—O三元系热力学的计算,讨论在混合气体N_2-H_2-H_2O产中生成氮化硅的条件及氧对氮化过程的影响。用光学显微镜、扫描电子探针和x射线衍射分析方法检验氮化硅试样的显微组织,确定为:α-Si_3N_4,β-Si_3N_4,残余硅和孔隙。 采用热重分析方法研究1603-1675K 范围的混合气体 N_2-H_2-H_2O(P_(N_2)=8×10~(-1)atm,P_(H_2)=2×10~(-1)atm,P_(H_2O)=2×10~(-7)atm)中硅氮化反应的动力学。 认为:氮化过程的限速步骤是氮气通过在硅表面上的氮化物壳层的扩散,并提出一种解释扩散机理的模型。计算得扩散活化能为148.000Cal/mol。

 
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