To develop light, reliable, sanitary space station maneuverable orbital transfer thruster, the novel gas dynamic resonance ignition method was applied.
为研究轻型、可靠、环保的空间站机动变轨发动机，在氢氧液体火箭发动机头部设计中引入了新型气动谐振点火技术。
Orbit maneuver hydrogen-oxygen thruster based on gas dynamic resonance igniter is a novel chemical propulsion technology especially prospective in space station application.
结合气动谐振点火器进行头部设计的氢氧变轨火箭发动机是一项新颖化学火箭推进技术，尤其适于空间站应用。
This paper described the primary analysis of a new model helicopter ground resonance in taking off and landing by employed classical spatial dynamic model.
对某新型直升机垂直起落状态“地面共振”初步分析，采用经典的空间动力模型进行计算。
Objective To evaluate the function of dynamic contrast-enhanced magnetic resonance imaging in preoperative evaluation of patients with breast cancer.
目的评价动态增强核磁共振在乳腺癌病人术前评估中所起的作用。
Dynamic stiffness and damping characteristics of landing gears are important parameters to be used to investigate the "ground resonance" of helicopters.
起落架动刚度及阻尼特性是研究直升机“地面共振”问题两个重要参数。
The active filter based on dual DSP can improve the performance of filtering, restrain the resonance between LC circuit and electrical network, and improve dynamic performance of compensation system.
采用基于双dsp结构的有源滤波器可以大大改善滤波性能，并能抑制LC电路与电网之间的谐振，提高补偿系统动态性能。
Based on the coupled dynamic model for the spatial rotation and elastic vibration of a body, the resonance unstability of projectiles in flight is studied in the paper.
从弹箭空间摆动和弹性振动耦合的动力学模型出发，对弹箭飞行过程中的共振不稳定性问题进行了研究。
An analytical method of ship resonance dynamic stability countering the helicopter with wheel landing gears is provided.
针对轮式起落架直升机，提供了一种“舰面共振”动力稳定性分析方法。
Compared to the traditional filter, such filter takes care of both central resonance frequency's impact on system dynamic performance and other resonances' impact on system performance.
相对于常规滤波器，该滤波网络既考虑了中心谐振频率对系统动态性能的影响，又兼顾了其他谐振点对系统性能的影响。
The dynamic deflection may become very large due to resonance in case of the flexible rotor speed approaching or exceeding its 1st or 2nd order critical speed.
而挠性转子在接近或超过其第一、二阶临界转速时，转子处于共振状态，这时动挠度达到很大的数值。
Methods: The study investigated 68 elderly cases by polysomography randomly, they were examined by blood pressure, dynamic electrocardiogram, coronary arterial radiograph, nuclear magnetic resonance.
方法：用多导睡眠图监测68例患者，同时行动态血压、动态心电图及冠状动脉造影、磁共振检查。
Objective To explore the application value of three-dimensional dynamic contrast-enhanced magnetic resonance angiography (3d DCE-MRA) of the skull and neck vessel disease.
目的探讨磁共振三维动态对比增强磁共振血管成像(3dDCE - MRA)对头颈部血管病变诊断的应用价值。
Based on structural dynamic theory, the resonance mechanical model is established.
根据结构动力学理论，建立了边坡共振的力学模型。
This paper presents two kinds of approximate analytical solution, non-resonance solution and resonance solution, of non-linear dynamic equation based on a type of ultra-low frequency vibrator.
给出了一类超低频标准振动台非线性运动方程的两种近似解析解——非共振解法和共振解法。
Using the main coordinate law to study and analysing dynamic response characteristics of resonance type of system, setting up the mathematics model of the resonance type vibration system;
研究与分析了共振式振动系统的动态响应特性，建立了共振式振动系统的数学模型；
Then the dynamic performance and the harmony response analysis are completed by means of finite element analysis, the resonance frequency range of system and other dynamic features are found.
然后在此基础上进行谐响应分析，得到系统的共振频率范围及其它动态特征。
Objective:To explore neural correlates for the explicit recognition of dynamic facial expression in male major depressed patients using event-related functional magnetic resonance imaging.
目的：抑郁症患者存在负性认知模式，本研究旨在探讨男性抑郁症患者识别动态面部表情情绪偏向性的神经基础。
This paper analyses the influence of vertical resonance on horizontal dynamic stability of structure. It derives related calculating formulas and gives some rationing results from practical examples.
研究纵向共振时结构横向动力失稳问题，推导出有关的计算公式，并由例题计算给出一些定量结果，证明在动力稳定分析中必须考虑纵向共振的影响。
An analytical method of ground resonance dynamic stability countering the helicopters with ski landing gears is provided.
针对滑橇式起落架直升机 ，提供了一种“地面共振”动力稳定性分析的方法。
Resonance analysis of gear system with the consideration of dynamic rigidity, transmission error and tooth backlash;
提出一种基于误差传递思想和灰色预测理论的质量控制的误差模型。
Resonance analysis of gear system with the consideration of dynamic rigidity, transmission error and tooth backlash;
提出一种基于误差传递思想和灰色预测理论的质量控制的误差模型。
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