查询词典 Doppler range

The observed EMF values of oxygen concentration cell coincided withtheoretical values perfectly, indicating that the ceramics were purely oxide-ionicconductors with oxygen ion transference number of 1 under oxygen atmosphere over thewhole temperature range. The electrochemical oxygen permeation rates determined were inaccordance with the theoretical rates calculated from Faradays law, verifying directexperimentally that the oxide-ionic nature of the conduction under oxygen atmosphere. Athigh oxygen partialpressure range pO_2=10~(-5～10~5 Pa, they were almost pure ionicconductors, which was consistent with the result by means of oxygen concentration cell.Whereas at low oxygen partial pressure range pO_2=10~(-5～10~(-15)Pa, the samplesexhibited mixed ionic and electronic conduction.

结果表明，氧浓差电池电动势的实测值与理论值吻合得很好，氧离子迁移数为1，表明该系列样品在该温度下氧气气氛中为纯氧离子导体；氧泵实验结果进一步证实了该系列样品在氧气气氛中为纯氧离子导体；在氧分压pO_2=10~(-5)～10~5 Pa的高氧分压气氛中，电导率与氧分压变化基本无关，表明在该氧分压范围样品为纯离子导体，这与氧浓差电池电动势测定结果相吻合：在低氧分压为10~(-5)～10~(-15) Pa范围，总电导率随氧分压降低而稍有升高，表明在该氧分压范围样品为氧离子与电子的混合导体。

A J-10 prototype parking outside the hanger of the CAC test site 停在成飞试飞基地挂架外的J-10原型机 In addition to the PL-8 short-range infrared-guided air-to-air missile reportedly derived from Israeli Rafael Python-3 technology, the J-10 could also carry Russian Vympel R-73 (AA-11) short-range and R-77 (AA-12) medium-range missiles equipped by Chinese Flankers.

除了可以携带源于以色列怪蛇3的短程红外寻的空空导弹霹雳8以外，J-10还可以携带已经装备中国侧卫战斗机的俄罗斯的r-73短程和r-77中程导弹，为了满足超视距攻击的需要他还可以携带发展中的霹雳-11和霹雳-12中程空对空导弹。

Pening range breakout is effective after an inside day that has a smaller daily range than the previous four days (IDnr4 in Figure 1 ) and after any day that has a daily range less than the previous six days (NR7) whether an inside day or not.

RB这一现象发生在IDnr4或者NR7之后常常是有效的。IDnr4是指振幅小于前面4天的孕线形态。NR7是指振幅小于前面6天的形态。

Regular condition issues the transmitter measuring range as magnetism translates the board liquid place meter but looks at range , the transmitter form pole may flee about to move , 4 ~ 20 mA adjusting the transmitter form pole using the transmitter output signal are OK as magnetism translates the board liquid place meter but looks at range on the UB-B type transmitter being fixed according to what left picture shows with fastening circle translate the board liquid place in magnetism.

UB-B型变送器按左图所示用紧固圈固定在磁翻板液位指示计上，正常情况下变送器量程与磁翻板液位指示计计可视范围相同，变送器表杆可上下窜动，调整变送器表杆使变送器输出信号4~20mA与计可视范围相同即可。

Regular condition issues the transmitter measuring range as magnetism translates the board liquid place meter but looks at range , the transmitter form pole may flee about to move , 4 ~ 20 mA adjusting the transmitter form pole using the transmitter output signal are OK as magnetism translates the board liquid place meter but looks at range on the UB-B type transmitter being fixed according to what left picture shows with fastening circle translate the board liquid place in magnetism.

UB-B型变送器按左图所示用紧固圈固定在磁翻板上，正常情况下变送器量程与磁翻板计可视范围相同，变送器表杆可上下窜动，调整变送器表杆使变送器输出信号4~20mA与磁翻板计可视范围相同即可。

Main production: LED processing applications, traffic lights, light lights, water mains lights, guardrail lamp; a full range of light-emitting diode, digital control, clock board; a full range of dot matrix, pixel tubes, backlight board; a full range of infrared emission control, receiving tube, receiving head; pixel modules of various specifications.

主要生产：LED加工应用、交通灯、光源灯、水管灯、护栏灯；全系列发光二极管、数码管、时钟板；全系列点矩阵、像素管、背光板；全系列红外发射管、接收管、接收头；各种规格像素模组。

All over the word, the name liebherr stands for a technically advanced, benefit-oriented range of products and services.for the construction industry the extensive product program comprises construction cranes, truck and mobile cranes, crawler cranes, hydraulic excavators and hydraulic rope excavators, wheel loaders, crawler tractors and loaders, mining trucks, concrete mixing plant and truck mixers; liebherr's products for cargo handling include ship, offshore, container and mobile dock cranes; the machinery and plant range encompasses machine tools, material flow technology and engineering projects; the aircraft equipment comprises landing gear, actuation and air-management systems; transport technology equipment comprising air conditioner for tran rapid in shanghai and other trains; in the domestic appliances area, liebherr specializes in refrigerators and freezers, with a range of more than 300 principal models.

在全世界范围内，利勃海尔这一名词代表着先进的技术、高性能的产品和优质的服务。n用于建筑工业的产品有塔式起重机、轮胎式和汽车式起重机、履带式起重机、液压挖掘机和液压钢绳式挖掘机、轮式装载机、履带式推土机和履带式装载机、矿用自卸车、混凝土搅拌站和搅拌运输车等；利勃海尔用于货物转运的产品包括船用、钻井平台、集装箱式起重机；机械加工和工厂建设方面有机床、物流设备和工程项目；航空设备包括起落架、作动器和空气调节与管理系统、运输技术准备主要包括上海磁悬浮列车和其他火车用的空调器等；家用电器方面，利勃海尔专业生产基本型号达300余种的冷冻与冷藏设备。

To solve the exsisting problems in the realization of the LFM/CW radar, the thesis presents a technique for dynamically measuring the LFM/CW signals, which can accomplish the dynamic measurements of FM linearity, FM bandwidth and FM slop of the transmitted signals of LFM/CW radars. This technique creates an effective and accurate means of judging the performance of LFMCW radars. The linearity-correction techniques presented in the thesis successfully make the linearity of the transmitted signals of an actual LFM/CW radar reduce from approximately 25% to 0. 1%(or r. m. s linearity of 0.04%), better than the best results (0.22%) obtained by foreign researchers with complex linearization closed-loop in the same kind of LFM/CW radars, according to the published literatures during the last decade. In order to improve the capability of the real-time processing and range-cells management of LFM/CW radars, the principle of equivalent mixing by lacking-sampling process of band-pass real signals is proposed based on the well-proved improvedversion of sampling theorem of band-pass real signals. This principle is used to configure the range-segments processing of the beat signals of an actual LFM/CW radar. The techniques of system-background interference suppression and the beat signal's dynamic range suppression are proposed, and are realized in an actual LFM/CW radar to demonstrate their effectiveness.

针对线性调频连续波雷达实现中急待解决的技术问题，文中提出并验证了线性调频连续波信号的综合动态测试技术，可以完成对线性调频连续波雷达发射信号的扫频线性度、扫频带宽和扫频斜率的综合动态测试，为衡量实际线性调频连续波雷达的系统性能创立了精确有效的测试手段；文中建立的非实时闭环动态校正技术使一部实际的线性调频连续波雷达的发射信号（时带积3×10〓）的扫频线性度从25%改善为0.1%（方均根线性度0.04%），优于国外已公布的80年代同类雷达中采用复杂的实时闭环动态校正环路所获得的实际结果（0.22%）；为了改善线性调频连续波雷达的实时性和分辨单元数处理能力，文中发展完善了实带通信号的采样定理并给予了严格证明，并在此基础上提出了欠采样等效混频原理，将其应用于实际线性调频连续波雷达的距离分段处理中；针对线性调频连续波雷达中系统背景干扰和回波动态范围问题，创立了系统背景综合抑制技术和频域动态范围压缩技术，并将它应用于实孔线性调频连续波雷达系统中，显示出它们的有效性。

A tooth-shaped waveform forming unit (105) shapes the waveform of the frequency range signals outputted from the repetition unit (104), into a tooth-shaped waveform, and an IFFT unit (106) converts the frequency range signal outputted from the tooth-shaped waveform forming unit (105), into a signal of a time range.

在梳齿状波形生成单元(105)，将由重复单元(104)输出的多个频域信号波形生成为梳齿状波形，而在IFFT单元(106)，将由梳齿状波形生成单元(105)输出的频域信号，变换为时域的信号。

The results of the simulation analysis and experiments indicate that the loss of ultraviolet scattering transmission in atmosphere is high because of the particle scattering and absorbing in solar-blind zone; that is, the received power can descend 20 dB with the distance increasing 10 times. Therefore, the ultraviolet scattering is fit for short range communication. In short range, the pulse extension due to scattering is at microsecond order and its influence for low and moderate bit rate communication systems is weak. Since the light output power of a single ultraviolet LED is low, a multi-LED array can be used to increase the transmit power and extend the communication range.

仿真分析与实验结果显示：日盲区紫外光在大气中散射传输时由于大气粒子的强烈散射与吸收，传输损耗较大，距离每增加10倍，接收功率下降20dB，因此日盲区紫外光大气散射通信适用于近距离通信场合；近距离传输时散射造成的光脉冲多径展宽为微秒量级，对中低速通信系统影响较小；单个紫外LED发光功率较低，可通过多个LED阵列来提高发射功率，增大通信距离。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

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