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- The afterflow represents a production of kinetic energy which becomes converted into a pressure wave when the outward flow of water is reversed. 残余塑性流动代表在外向水流返回时动能变为压力波的一种结果。
- And low permeability reservoir is slower than mid-high permeability reservoir in pressure wave propa... 低渗透油藏比中高渗透油藏的压力波传播速度慢。
- The data of the percussion pressure wave, the rat's b lood pressure and heart rate were recorded. 实验中由计算机记录冲击时脑承受的压力曲线并描记大鼠血压和心率变化。
- The results indicted that the deformation range by the first pressure wave is proporational with impact velocity. 研究结果表明:泡沫铝试样在不同的冲击速度加载下变形量大小不同,随着冲击速度的增大,试样达到该冲击速度下的最大变形所需的压缩次数(冲击波的反射、透射过程)减少。
- The afterflow represents a production of kinetic energy which becomes convered into a pressure wave when the outward flow of water is reversed. 残余塑性流动代表在外向水流返回时动能变为压力波的一种结果。
- Abstract: Two ignition methods are investigated to reduce pressure wave in large caliber gun propelling charge with high loading density. 文摘:研究了两种能降低某大口径火炮高装填密度发射装药的膛内压力波的点传火方案。
- Two ignition methods are investigated to reduce pressure wave in large caliber gun propelling charge with high loading density. 研究了两种能降低某大口径火炮高装填密度发射装药的膛内压力波的点传火方案。
- The conventional formula of the investigation radius is defined by the peak time of pressure wave,which is mainly on theory. 认为传统的探测半径计算公式是通过压力波的波峰进行定义的,其理论性很强。
- Fluid is conveied to bit nozzel through drill string from pump is a transient state flowing with pressure wave, which makes the fluid jetted out from nozzel has certain pulsation. 从钻井泵经过钻柱内部输送到钻头喷嘴的流体是一种瞬态流动,存在着压力行波,使从普通喷嘴射出的流体有一定程度的脉动。
- The paper introduces three basic working styles of signal transmission of mud pulse MWD sys tern,pressure positive pulse, pressure negative pulse and continuous pressure wave. 介绍了泥浆脉冲随钻测量系统信号传输的3种基本工作方式:压力正脉冲、压力负脉冲和连续压力波。
- The relationships between oscillation frequency, pressure wave amplitude (ratio) and the size (length and diameter) of the acoustic amplifier are obtained. 得出了系统频率、压比等参数随声学放大器尺寸的变化关系。
- He expresses, weather becomes suddenly cold to be able to make vasomotor strengthen, cause blood pressure wave motion, cause disease of heart head blood-vessel thereby. 他表示,天气突然变冷会使血管收缩加强,造成血压波动,从而引发心脑血管疾病。
- When the squeegee moves across the stencil, it creates a pressure wave in the ink.The pressure will cause the ink to move in the least resistance direction. 当刮墨刀移过模版,变会在油墨产生压力波浪,压力便会令油墨在最低阻力的方向移动。
- The pressure wave is generated by exploding small detonator.The sound speed is obtained by amending propagation velocity of pressure wave that has been measured. 通过测量由小药量电雷管爆炸而产生的压力波传播速度,然后修正到音速。
- Once combustible gas is ignited, which often leads to explosion, the explosion pressure wave and propagation of flame will be influenced by many factors. 一旦发生油气爆炸然烧,爆炸压力波和火焰的传播将受到众多因素的影响。
- To predict cavitation incipience, pressure wave and distribution of one dimensional unsteady flow before piston moving in pipe were calculated by the method of characteristics. 为了预测空化初生,用特征线法计算了减速运动活塞前管内一维非定常流的压力变化及分布,分析了管内压力变化规律及空化初生的条件。
- Wind direction, wind velocity, air temperature and air pressure have a very great effect on the propagation of pressure waves. 风向、风速、气温和气压对压力波的传播有十分巨大的影响。
- By using Chapman-Enskog expansion and multi-scales technique, we obtained a series lattice Boltzmann equations and conservation law in the time scale t0. We select simple equilibrium distribution functions to get moments for the pressure wave equations. 通过使用Chapman-Enskog展开和多重尺度技术;得到了一系列的格子Boltzmann方程和时间尺度t0上守恒律;给出了满足地震压力波方程所要求的高阶矩以及简单的平衡态分布函数表达式.
- A microphone inside each muff senses sound waves that make it through the outer ear cup, and a speaker creates pressure waves that cancel them. 耳机罩内的麦克风负责感应传入耳机外壳的声波,喇叭负责制造压力波予以抵消。
- A sound also has an amplitude, a property subjectively heard as loudness.The amplitude of a sound is the measure of the displacement of the air pressure wave from its mean, or quiescent state. 声音有振幅;振幅的主观感觉是声音的大小.;声音的振幅大小取决于空气压力波距平均值(也称平衡态)的最大偏移量