查询词典 echo chamber

Control systems allow the independent control of the quantity, temperature and pressure of the air, fuel and non-flammable liquid introduced in the combustion chamber allowing control of the maximum temperature and average temperature within the combustion chamber as well as the temperature of the exhaust from the combustion chamber.

控制系统可以独立控制引入燃烧室中的空气、燃料和非可燃烧液体的数量、温度和压力，从而可以控制燃烧室中的最大温度和平均温度，以及燃烧室的排出温度。

It comprises a thermoelectric module subject to the Peltier effect, which is supplied with electric power and whose hot face is in contact with a heat-dissipating radiator and whose cold face is in contact with a thermally insulated condensation chamber in which circulates the atmosphere charged with the vapors to be condensed, said chamber having a conductive metal structure provided with perforated ribs, the flow of the atmosphere and the temperature being permanently controlled at values such that the condensed vapor remains in the liquid state, the liquid condensate obtained flowing by gravity into the lower part of the chamber which, for this purpose, has a liquid phase discharge port.

它包括热电模块的主题，向珀尔贴效应，这是供应电力和热，其面临的是在接触与散热散热器和其冷战面对的就是在接触一热绝缘凝结商会在其中流转的气氛被控蒸汽被冷凝说，商会有一个导电金属结构提供穿孔肋骨，流动的气氛和温度被控制在永久价值，例如说，简明汽依然保持在液体状态，液体凝结获得流动重力成较低的一部分，会议厅，为此，有一个液相放电港口。

But, in the natural and artificial signal, a lot of signal phases don\'tvary linearly with time, for example, we usually use chirp signal in the radar technology,frequency step signal, linear modulation component of the ground echo in the SARtechnology, linear modulation component of the moving target echo, linear modulationcomponent while the airborn radar detecting the moving target, etc.

在自然界和人工信号中，许多信号的相位变化并不是随时间一次方变化，如雷达技术中常用的线性调频信号，频率步进信号，另外，SAR 技术中，地面回波所含有的线性调频分量，ISAR技术中，运动目标的回波所含有的线性调频分量，机载雷达探测运动目标时的线性调频分量，等等；傅里叶变换对此类信号分析所得的结果是信号在不同频率点上的能量分布，即信号在基函数上的投影。

In ultrasonic inspection of butt weld s, interfering echoes, such as corner echo, hill-shaped echo, etc.

在对接焊缝超声波探伤中，荧屏上常会出现一些影响缺陷判别的干扰回波，如焊角回波、"山形回波"等。

The hapless nymph, however, cannot even claim credit for echoes because the Greek word ekho, the source of English echo, existed with our common noun sense before any mention of Echo is found.

可惜的是这位不幸的女神并不能因为制造了回声这个词而居功，因为希腊语ekho ，即英语中echo 的来源，早在任何关于伊可的故事之前就存在了。

He went up to the mountains and shouted,"I hate you, I hate you,"and back came the echo"I hate you, I hate you."This was the first time that he had heard an echo.

他爬到山上大声喊："我恨你，我恨你"，就听见回声"我恨你，我恨你"，这是他第一次听到回声。

Results There was no obvious change in the ulstrasonographic characteristics and the pathology of the control group.The diameters,internal echo,the continuity of internal linear echo and epineurium changed correpondingly with time of compression in different model groups.

结果声像图表现：对照组与卡压前正常神经未见明显改变，各卡压组高频超声下均可观察到相应声像图变化，随卡压时间的延长，卡压两端内径逐渐增粗，内部回声逐渐减低，内部线性回声连续性差，神经外膜逐渐增厚。

Back a car radar uses principle of ultrasonic range finding commonly, below the control of controller, transmit ultrasonic signal by sensor, when encountering fraise, generate echo signal, controller of the classics after sensor receives echo signal undertakes data processing, judgement gives the seat of fraise, by show

倒车雷达一般采用超声波测距原理，在控制器的控制下，由传感器发射超声波信号，当碰到障碍物时，产生回波信号，传感器接收到回波信号后经控制器进行数据处理、判定出障碍物的位置，由显

Using the time-gain compensation technique to compensate for ultrasonic wave's weaking when transmitting in the air,and reduce the fluctuation of echo signal.The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

和其他方法相比，如激光测距、微波测距等，由于声波在空气中传播速度远远小于光线和无线电波的传播速度，对于时间测量精度的要求远小于激光测距、微波测距等系统，因而超声波测距系统电路易实现、结构简单和造价低，且超声波在传播过程中不受烟雾、空气能见度等因素的影响，在各种场合均得到广泛应用。

According to the difference of Doppler spectra of meteor trail echo and clutter of ground and sea,a FIR high-pass filter is designed to filter out clutter and so the meteor trail echo becomes obvious.

该文根据地海杂波与流星干扰在多普勒谱上的差别，提出了用FIR型高通滤波器滤除杂波使流星干扰凸显出来；再根据流星干扰的分布特点分段计算背景噪声均值，求取流星干扰检测门限；最后用杂波信号来插值流星干扰位置上的数据，消除因去除干扰造成的杂波相位不连续。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。