查询词典 wave front

This system mainly contains the front-end pulse interception and back-end software analysis. In the first part, we used a non-invasive infrared measurement method based on the dual channel simultaneous measurement technique. We measured the photo-plethysmograph from the subject's fingers and toes simultaneously, then used an analog circuit and central control unit to process the signals. Finally, the digital volume pulse data is processed by a personal computer. Because the characteristic points of digital volume pulse always occur in sharp variations, this paper proposes two algorithms to solve this problem. First, we find the pacemaker and percussion wave peak from transient slope variation, and then locate the dicrotic notch and dicrotic wave peak by using the wavelet transformation algorithm. When we analyze the data, we use the Visual Basic graphical user interface, which together with the Matlab is the core of the system.

本系统主要包含前端脉波撷取及后端软体分析两部分，其中前端脉波撷取部份是以非侵入式的红外线量测方式，双通道同步量测受测者手指与脚趾的光容积变化描记图，同时将此讯号经类比处理电路及中央控制单元输出成为数位容积波，再传送至个人电脑中；而在后端软体分析部份，因数位容积波之特徵点皆出现於波形中急剧变化的部份，故本论文以瞬间斜率变化量来定位脉波讯号中的起搏点及主波峰顶点，并利用小波转换演算法（wavelet transformation algorithm）来分析重搏切迹与重搏波顶点；程式撰写主要以Matlab为核心，结合Visual Basic的图形化使用者操作介面，增加系统与使用者间的亲和力。

Characteristics of the short-wave have sharp varieties in a cabined zone near wave front.

根据短波的研究，给出了近区应力波的衰减规律。

Numerical results indicate that in some cases detonation wave may quench when detonation wave front diffracts at the entrance of expanding chamber due to the extreme declination of temperature and pressure.

结果表明，爆轰波传播至突变截面扩张管道时，由于稀疏波的作用可能会使爆轰波局部熄爆甚至完全熄爆，对于某些敏感度高的反应气体爆轰波可以二次起爆。

For strong disturbance case in which Δp is set to be 5, by examining the distributions of relevant physical quantities along radial direction and the normal of wave front, we can infer that the slow wave introduced by the strong pressure pulse steepens into slow shock during the propagation process.

与二维情形类似，沿由源区出发的径向，可以分辨出压力脉冲增长相所引起的前导快波与后随慢波的传播，同时还可观察到压力脉冲恢复相所导致的快模磁声波的传播，由于传播速度的差异，该波动在向外传播的过程中逐渐超过后随慢波。

Tracking advancing front of ocean wave simulation home and abroad,associating with concrete engineering requirements and conditions of software and hardware,an algorithm of ocean wave simulation based o...

文中提出的海浪实时仿真方法和关键技术，既可为模拟飞行训练提供一个虚拟海战场环境，又可为其它自然景物仿真提供经验和方法。

At the same time the influence of the cavity in front of slow-wave structure and the length of a smooth drift tube which connect two sections of slow-wave structure are also studied in this dissertation. Lastly, many experiments are done on the base of simulation.

然后利用Magic粒子模拟软件模拟了反射器对器件工作性能的影响，同时还分析了慢波系统前面的腔体以及两段式慢波结构中过渡段的长度对器件工作性能的影响。

Such lensed fiber tip corrects for the phase front mismatch between the curved laser beam wave front and the planar fiber beam.

本文研究的透镜光纤主要是楔形柱透镜光纤，它的作用是修正激光光束波前和从光纤出来光束之间的相位失配。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

Adopt one kind of design plan that PLC controls in the protection the main body of a book has been introduced succeeding an electricity in electric system, that capital is designed time is that the KV circuit imports 10 mainly , change into 380 V voltage grades, before the PLC front and back add front to passage and the queen to passage, change before to passage middle course electric current , voltage a train of, the wave filtering the general is exchanged changing waking up with a start for direct-current, the entering carrying out comparison and switch amounts again , controlling conducting entering PLC, by PLC, The malfunction signal is shown out by lamp light or the alarm signal.

本文介绍了在电力系统继电保护中采用PLC控制的一种设计方案，本次设计主要是将10KV线路输入，转化为380V电压等级，在PLC前后加入前向通道和后向通道，在前向通道中经过一系列的电流、电压转换，将交流转换为直流，进行滤波，再进行比较和开关量的输入，传入PLC，通过PLC的控制，将故障信号通过灯光或者报警信号表现出来。

Bi Ru gains the winning area preelection queen , the husband laughs at the handwriting that he writes on the gauze wrapping up the eye wound's learning to take the crown (if being that increasingly, front has given off crossroads for a long time) but he has explained that only lightly now in the ordinary time is green for the souvenir, angulus oris even be with faintly discernible circular measure; But have not come to give lessons after supposing that ding-dang MOMO loses being choosing qualification, face other people's inquiry he shut consider in a certain aspect leave a pet phrase behind leaving, stage leaves to be sleeping to see MOMO time the midday nap roar with laugh since complete water bleaches , he smiles spontaneously, as if being to have laid down one piece at heart large stone finally on the day; Suppose that northeast China is big when competing in third singles again, Qian falls for following the ball to have spoiled a glasses , see that green grass learns while he puts on the alternate mirror again entire the meeting being smiling at him holding up one's thumb in approval if you are up to meticulous words finds that: The unwilling increasingly front expression in one's eyes "V" hand signal is that ball is played with out by the chrysanthemum, but the thumb that another pricks up on hand does not have be pinned down by accepting others absolutely, in other words, that be to volunteer increasingly in the front , sincere oiling,...

比如获得地区预选优胜后，老头子笑话他包扎眼伤的纱布上写的字迹（如果是平时越前早就冒十字路口了）但此时他只是淡淡解释那是为了纪念青学夺冠，嘴角甚至是带着若有若无的弧度；又比如当MOMO失去正选资格后没来上课，面对其他人的询问他闭着眼丢下口头禅走人，但在天台上睡午觉时看到MOMO打完水漂大笑着离开，他又不禁莞尔，似乎是终于放下了心中的一块大石；再比如关东大赛第三单打时，乾为了救球摔坏了眼镜，当他重新戴上备用镜时看见青学全体对他微笑着竖起大拇指——如果你够细致的话会发现：眼神无奈的越前的"V"手势是被菊丸弄出来的，但另一只手上竖起的大拇指绝对没有受到他人的牵制，换言之，那是越前自愿的、真心的加油……诸如此类，不胜枚举。

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。