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performance and stability
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  性能和稳定性
     The effect of Cu, Al and P modifying species on the reaction performance and stability of doublymodified ZnHZSM-5 was studied- Cu species can enhance the dehydrogenation ability of the catalyst, andAl and P species can change its surface acidity.
     研究了ZnHZSM-5上引入第二政性物对正戊烷芳构化反应性能及催化剂稳定性的影响,发现作为第二改性物,CU、Al、P物种对催化剂的反应性能和稳定性的促进作用不同,CU物种主要增加ZnHZSM-5的脱氧作用,而Al和P物种的作用则是调变其酸性质。
短句来源
     The performance and stability of the cell made by the CCHM mode was studied and was compared with other preparation modes. The performance of the cell reaches to 0.63 V at the current density of 600 mA/cm2, which is close to the CCM mode.
     研究了CCHM模式制备的电池电性能和稳定性,并与其它制备模式制备的电池电性能进行了比较,CCHM模式制备的电池电性能在600mA/cm2下为0.63V,与CCM模式制备的电池性能相近。
短句来源
     Water management of direct methanol fuel cells (DMFCs) is very important for the improvement of performance and stability of DMFCs.
     直接甲醇燃料电池(direct methanol fuel cell, DMFC)的水管理能力对提高其性能和稳定性至关重要。
短句来源
     Some measures to improve the performance and stability of the micro-channel plate based detector for SMCAMS is described in detail.
     叙述了为提高SMCAMS单粒子微通道板探测器性能和稳定性所采取的措施。
短句来源
     The controlling system of PAW2000 introduces CPLD chip which effectively solve the contradiction between complexity and reliability of system, improving performance and stability, warranting the pipeline all- position automatic welder to work properly.
     在PAW2000控制系统中采用CPLD)芯片,有效地解决了系统复杂性和可靠性之间的矛盾,提高了技术性能和稳定性,确保了管道全位置自动焊机的正常工作。
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  性能及稳定性
     Hydroisomerization of n-tetradecane over Pt/SAPO-11 catalyst Ⅰ.Effect of reaction parameters on catalyst performance and stability
     Pt/SAPO-11催化剂上正十四烷临氢异构化 Ⅰ.反应条件对催化性能及稳定性的影响
短句来源
     Analysis on Network's Performance and Stability of Networked Control Systems
     网络化控制系统的网络性能及稳定性分析
短句来源
     Experimental Study on Performance and Stability of Low Power Arcjet
     低功率电弧加热发动机性能及稳定性的实验研究
短句来源
     Catalytic performance and stability of Ni/MgO-CeO_2-SiO_2 were investigated for reforming of methane with CO_2 and O_2 to produce syngas, in fluidized bed and fixed bed reactor, respectively.
     分别在流化床和固定床反应器中考察了该催化剂对甲烷临氧CO2重整制合成气反应的催化性能及稳定性.
短句来源
     Physical Properties, Electrochemical Performance and Stability of Several Kinds of Fe(VI) Compounds
     几种Fe(Ⅵ)化合物的物理性质、电化学性能及稳定性研究
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  性能和稳态性能
     A state-feedback control with pole constrain is presented, which guarantees the requirement of dynamic performance and stability of the system.
     介绍了具有极点约束的状态反馈控制方法,以确保系统具有一定的动态性能和稳态性能的要求。
短句来源
     The simulated results show that this kind of arithmetic is better than the general PID decoupling . It not only has better dynamic performance and stability but also has better self-learning function and self-adapting decoupling ability.
     仿真结果表明这种单神经元PID解耦算法实现的控制比常规的PID解耦不仅具有较好的动态性能和稳态性能,而且还具有很强的自学习功能和自适应解耦能力。
短句来源
     The simulation results showed the control process of pendulum angle and cart position had good dynamic performance and stability.
     结果表明,摆杆角度和小车位置的控制过程均具有良好的动态性能和稳态性能
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  “performance and stability”译为未确定词的双语例句
     Study of the Catalytic Performance and Stability of Ti-grafted MCM-48 in the Hydroxylation Reaction of Benzene
     Ti接枝MCM-48对苯羟化反应的化学亲和选择性及化学稳定性研究
短句来源
     Study of Performance and Stability of Flexible Satellite Thermal Control Materials
     卫星柔性热控材料性能及其稳定性研究
短句来源
     The deep studies have been made to further extend application of SVM to pixel-level image processing and improve performance and stability of modern star tracker, which include: (a) mapped least squares support vector machine (MLS-SVM) theory and its application;
     对如何将SVM 应用于像素级图像处理,进一步提高星敏感器的性能和可靠性进行了深入地研究。 研究的主要内容包括:(a)映射二乘向量机(mapped least squares support vector machines, MLS-SVM)理论与方法;
短句来源
     It is proved by the experiment that the control card has good real-time performance and stability,which can meet the requirements of motion control.
     实验证明,该运动控制卡运行稳定、实时性好,能满足运动控制的要求.
短句来源
     Catalytic Performance and Stability of Ti-grafted KIT-1 in the Hydroxylation of Benzene
     Ti接枝KIT-1对苯羟化反应的化学亲和选择性及化学稳定性研究
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  performance and stability
These developments represent a major level of microstructure control that has an impact on the structural performance and stability.
      
Under various DC and RF stresses, SiC MESFETs fabricated on new V-free semi-insulating substrates showed superior device performance and stability.
      
Statistical model validation tools such as cross-validation, jack-knifing model parameters and permutation tests are meant to obtain an objective assessment of the performance and stability of a statistical model.
      
Finally, the effect of long-term attenuations on the system performance and stability is discussed.
      
Progress in performance and stability of a contactor-type Catalytic Membrane Reactor for wet air oxidation
      
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There are many advantages in the use of step motor driving system. The writerand his associates applied it to the feeding system in the EDM machine, accompaniedby sensing the voltage wave-form during the instant of discharging. Practice demonstratedthat they could improve remarkably the performance and stability in manufacturing. In this paper both the principles of the automatic control system and the methodof sensing are described; the choico of step motors and transmission chains, and thepulse equivalent...

There are many advantages in the use of step motor driving system. The writerand his associates applied it to the feeding system in the EDM machine, accompaniedby sensing the voltage wave-form during the instant of discharging. Practice demonstratedthat they could improve remarkably the performance and stability in manufacturing. In this paper both the principles of the automatic control system and the methodof sensing are described; the choico of step motors and transmission chains, and thepulse equivalent are discussed.

鉴于步进电机驱动系统具有许多优越性,作者及其合作者把它应用于电火花加工机床的进给系统,并采用了极间放电电压波形检测法。实践证明,它能显著地提高加工过程的稳定性和工艺效果。本文介绍了这一自动控制系统的工作原理和检测方法,探讨了步进电机及其传动链的选择以及脉冲当量等问题。

A brief view and results of tests for the effects of the inlet total pressure distortion on the performance and the stability of a two-spool turbojet engine are presented. There are a 3-stage H. P. compressor and a 3-stage L. P. compressor in the engine, in which two types of the first stage rotor G02 and 5P are tested separately. The distortion was generated by metallic mesh screens and the compressor surge was induced by a fuel flow step generator.It could be seen from the test results that when the area of...

A brief view and results of tests for the effects of the inlet total pressure distortion on the performance and the stability of a two-spool turbojet engine are presented. There are a 3-stage H. P. compressor and a 3-stage L. P. compressor in the engine, in which two types of the first stage rotor G02 and 5P are tested separately. The distortion was generated by metallic mesh screens and the compressor surge was induced by a fuel flow step generator.It could be seen from the test results that when the area of the jet nozzle increases from 100% to 142%, the operating line of L. P. compressor falls significantly, no matter whether the inlet airflow is distorted or not.The engine with G02 or 5P first stage rotors has surged 42 times. The surge line and operating line were determined with and without distortion. Test results are given in relationship of the pressure ratio to corrected mass flow and corrected speed.The inlet distortion caused the surge line and operating line of the H. P. and L. P. compressors to be moved downward, and the surge margin decreased. The greater the distortion index, the steeper the surge line falls. When the distortion index increases, the operating line falls slightly, the loss in surge margin increases. The quantitative relationship of the above-mentioned trend is shown with curves of test data in the paper.Comparing the engine test results with the rig test results, the surge line of the L. P. compressor obtained from engine test is higher than that from rig test, no matter whether the inlet airflow is distorted or not. This confirms that the surge margin and the compressor characteristic lines are effected not only by the inlet conditions, but also by outlet conditions, the interaction between compressor and other components, the initial process of surging and the difference between quasi-steady flow and dynamic flow. The characteristic lines of an independent component could not be simply used as a substitute for that of the compressor coupled with other components in a engine. That is, the test results of certain component obtained on test rig under specified conditions could not be considered as a reasonable base for evaluation of its performance and stability in an engine system.

介绍进气总压畸变对双轴涡喷发动机性能和稳定性影响的试验及其结果。试验在地面台架进行。发动机为低压和高压各三级、中等增压比加力式双轴涡喷发动机。 稳态周向压力畸变由90°扇形纱网造成。测定了不同堵塞比的纱网或叠合纱网产生的畸变幅度随发动机空气流量的关系曲线。 在有畸变和无畸变条件下,对装有两种不同展弦比的第一级超音级压气机叶片的发动机,分别测定喘振边界线和工作线,给出低压和高压压气机喘振裕度变化规律,对比试验结果进行了初步分析。 改变发动机喷口面积比由100~142%,在三种畸变和无畸变条件下进行了充分的稳、动态试验,发动机未出现不稳定工作情况。给出无畸变时工作线随喷口面积比变化曲线。 试验采用公司自行设计调试成功的燃油阶跃装置,逼喘双轴涡喷发动机42次。分别获得高压和低压压气机喘点84个以及进喘过程的示波曲线,简要分析了喘振过程参数变化特征。

A radiotelescope receiver was constructed of IF integrated circuits of P—N junction isolation.Its reliability,HF performance and stability are discussed in this paper.A comparison with integrated circuits of dielectric isolation and also with circuits of split elements is qlven.

本文叙述了射电望远镜接收机使用 PN 结隔离中频组件时的故障率、高频特性及稳定性,并和介质隔离组件及分立元件电路作了比较。

 
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