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unreacted region
相关语句
  未反应区
     Complex structures of vortices,the unreacted region,and shock-vortex interaction are observed in flow field around the left corner.
     分叉口左尖点附近的流场中出现了复杂的旋涡结构、未反应区及激波与旋涡作用.
短句来源
     Vortices accelerate reaction rates of the unreacted region.
     旋涡加速了未反应区的化学反应速率.
短句来源
  “unreacted region”译为未确定词的双语例句
     The experimental results show that the microstructure with ahead of laser irradiation region can be divided into unreacted region, transitional region and TiCp/Al composite region.
     结果表明:激光辐射的前沿区的组织可以被分为未反应原始粉末区、合成反应过渡组织区及TiC/Al复合材料区。
短句来源
  相似匹配句对
     Vortices accelerate reaction rates of the unreacted region.
     旋涡加速了未反应区的化学反应速率.
短句来源
     linear region;
     在频率域内,变化过程大致可划分为三个区域:I.线性区;
短句来源
     The mountainous- region in the .
     湖南省湘西山地是我国南方山地的一个重要类型。
短句来源
     Complex structures of vortices,the unreacted region,and shock-vortex interaction are observed in flow field around the left corner.
     分叉口左尖点附近的流场中出现了复杂的旋涡结构、未反应区及激波与旋涡作用.
短句来源
     DETERMINATION OF UNREACTED-NITROGEN IN THE Ti(C,N)
     Ti(C,N)中非化合氮的测定
短句来源
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  unreacted region
The partially reacted region is characterized by a number of physical processes and a distinct interface with the unreacted region.
      
The unreacted region is characterized by removal of a surface scale on the Ti particles and Ti α→ β solid-state phase transformation.
      


At present,the world's resource of phosphate rock is being exhausted,and it is urgent to develop and utilize low and medium-quality phosphate rock. The micro phenomena of reaction process of sedimentary phosphate ore in phosphoric acid are detected and studied by using SEM.XRD and other analysis methods. It is indicated that when the reactive components diffuse in ore particles through a large amount of micro pores, there exist three regions, including the penetration region where reaction has finished, the...

At present,the world's resource of phosphate rock is being exhausted,and it is urgent to develop and utilize low and medium-quality phosphate rock. The micro phenomena of reaction process of sedimentary phosphate ore in phosphoric acid are detected and studied by using SEM.XRD and other analysis methods. It is indicated that when the reactive components diffuse in ore particles through a large amount of micro pores, there exist three regions, including the penetration region where reaction has finished, the reaction region where reacton and diffusion phenomena happen at the same time, and the unreacted region. With the reaction proceeding, the penetration region and the reaction region will move towards the center of the particle. From the above basic point of view, the zone and fractal model of two-phase reaction kinetics model has been put forward,which can fit the experiment data satisfactorily.

当前,世界磷矿资源日趋枯竭,迫切需要开发利用中低品位磷矿。介绍采用扫描电镜、能谱分析和X射线衍射等现代测试方法,对沉积型磷矿的酸解动力学过程介微观现象进行了研究,发现已反应完毕的区域与尚未反应的区域之间的反应界面不是一个面,而是一个过渡区域,这一反应区域将逐步向颗粒中心移动。根据固相物质的分形结构与反应机理提出的机理模型能较好地描述这一过程。

With suddenly shutting off laser beam in cladding process, the TiC synthesis mechanism of Al,Ti,C powder with laser cladding was discussed. The experimental results show that the microstructure with ahead of laser irradiation region can be divided into unreacted region, transitional region and TiCp/Al composite region. Through the analysis on the microstructure, the synthesis procedure of activated Al, Ti, C powder is confirmed in condition of laser effecting. The reaction of 3 Al+ Ti → Al3Ti...

With suddenly shutting off laser beam in cladding process, the TiC synthesis mechanism of Al,Ti,C powder with laser cladding was discussed. The experimental results show that the microstructure with ahead of laser irradiation region can be divided into unreacted region, transitional region and TiCp/Al composite region. Through the analysis on the microstructure, the synthesis procedure of activated Al, Ti, C powder is confirmed in condition of laser effecting. The reaction of 3 Al+ Ti → Al3Ti occurs in transitional region at first, then the reaction of Al3Ti+ C → TiC+3Al happens to form TiCp/Al composite. 

通过突然停止激光发射的实验方法,研究了经高能球磨活化的Al、Ti和C粉末在激光熔覆条件下TiC合成反应的过程及规律。结果表明:激光辐射的前沿区的组织可以被分为未反应原始粉末区、合成反应过渡组织区及TiC/Al复合材料区。依据组织及结构的分析,活化粉末在激光条件下的合成反应过程及机制得以揭示:原始粉末首先在过渡区发生了3Al+Ti→Al3Ti反应,所有的Ti都参与了这一反应,形成了块状的Al3Ti/Al组织,所有的C元素都包裹在了这种块状的组织中;随后发生了Al3Ti+C→TiC+3Al反应而形成TiCp/Al复合材料。

Gaseous detonation propagation through a bifurcated tube was numerically investigated.A 2~(nd) additive semi-implicit Runge-Kutta method and a 5~(th) order WENO scheme were used to solve two-dimensional reactive Euler equations.A detailed chemical reaction model was utilized to describe the heat release of detonation.The contours of density,pressure,temperature,species OH mass fraction,the computed cellular pattern and the traveling speed of detonation were obtained.The results show that,influenced by the rarefaction...

Gaseous detonation propagation through a bifurcated tube was numerically investigated.A 2~(nd) additive semi-implicit Runge-Kutta method and a 5~(th) order WENO scheme were used to solve two-dimensional reactive Euler equations.A detailed chemical reaction model was utilized to describe the heat release of detonation.The contours of density,pressure,temperature,species OH mass fraction,the computed cellular pattern and the traveling speed of detonation were obtained.The results show that,influenced by the rarefaction waves from the left sharp corner,the reaction zone is separated from the leading shock.Then,the detonation is degenerated into the deflagration.The winkled reaction front can be clearly identified in numerical schlieren and temperature contours.Re-initiation is induced by the leading shock reflection on the right wall in the vertical branch.Mach reflection of disturbed detonation occurs in both vertical and horizontal branches.The boundary between regions of uniform and larger cells is not a straight line;it doesn't exactly start at the left sharp corner and is usually upstream of the left sharp corner.The triple-point trajectory characterizing Mach reflection locates downstream of the right corner in the horizontal branch.Complex structures of vortices,the unreacted region,and shock-vortex interaction are observed in flow field around the left corner.Vortices accelerate reaction rates of the unreacted region.The reflected shock interacts with vortices and breaks them into pieces.Reflected shock also accelerates the consumption of the unreacted region and then an embedded jet is produced.The evolution of detonation wave and computed cellular pattern are qualitatively consistent with those from experiments.

数值研究气相爆轰波在分叉管中的传播现象.用二阶附加半隐龙格-库塔法和5阶WENO格式求解二维欧拉方程,用基元反应描述爆轰化学反应过程,得到了密度、压力、温度、典型组元质量分数场及数值胞格结构和爆轰波平均速度.结果表明:气相爆轰波在分叉管中传播,分叉口左尖点的稀疏波导致诱导激波后压力、温度急剧下降,诱导激波和化学反应区分离,爆轰波衰减为爆燃波(即爆轰熄灭).分离后的诱导激波在垂直支管右壁面反射,并导致二次起爆.畸变的诱导激波在水平和垂直支管中均发生马赫反射.分叉口上游均匀胞格区和分叉口附近大胞格区的边界不是直线,其起点通常位于分叉口左尖点上游或恰在左尖点.水平支管中马赫反射三波点迹线始于右尖点下游.分叉口左尖点附近的流场中出现了复杂的旋涡结构、未反应区及激波与旋涡作用.旋涡加速了未反应区的化学反应速率.反射激波与旋涡作用并使旋涡破碎.反射激波与未反应区作用,加速其反应消耗,并形成一个内嵌的射流.数值计算得到的波系演变和胞格结构与实验定性一致.

 
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