发射

General Atomics Electromagnetic Systems division has successfully fired multiple rounds for the first time in a prototype of its new Blitzer electromagnetic railgun air defense prototype system.

通用原子电磁系统部的成功发射了在其新布利策电磁轨道炮防空系统的原型样机首次多轮。

General Atomics, San Diego, Calif., is being awarded a ＄573,000,000 ceiling priced, undefinitized contract action for the production of the Electromagnetic Aircraft Launch System CVN 78 Shipset.

位于加利福尼亚州圣地亚哥的General Atomics公司日前获得了价值5.73亿美元、关于生产CVN-78舰船电磁飞机发射系统的未定案合同。

It shows that fed metal-film electrode surface is clean, without atomy and organic menstruum, metal films are firm and the propertied of field emission is steady with ultrasonic cleaning at 32khz/10min and uv cleaning for 5 minutes.

实验结果表明，fed金属薄膜电极在32khz超声清洗10min，uv光清洗5min后，电极表面干净，无尘埃和有机污物，金属膜层不脱落，显示器场发射性能稳定。

This experiment is in frequency adjustment X-mitter about that miniwatt frequency adjustment X-mitter operating principle, analyses the debugging making method and their installation, the microphone changes implication into an audible signal, wave an audible signal being modulated as a result of enlarging the day afer tomorrow being in progress to the carrier wave , producing frequency adjustment, by the fact that air wire launching the frequency adjustment electromagnetic wave to the outside , the radio set just can with frequency adjustment meet hear clear implication.

本毕业设计是关于小功率调频发射机工作原理、分析制作方法及其安装调试，在调频发射机中，话筒将话音转化为音频信号，音频信号经放大后对载波进行调制，产生调频波，通过天线向外发射调频电磁波，用调频收音机便可以接听到清楚的话音。

The way the transmitter audio response is measured is to apply a fixed modulating signal level which produces 60% of rated system deviation (3 kHz in our case) at 1000 Hz.

要测量发射音频的频率响应，方法是加上一个固定调制信号电平，这个电平在1000HZ下产生系统设计频偏的60%（这里是3KHZ）。

Methods 166 high-risk newborns were tested with DPOAE. Those who failed in DPOAE were tested with Impedance Audiometry immediately.

对166例高危新生儿在出生后进行畸变产物耳声发射检查，未通过的新生儿立即行声阻抗测试。

Company's franchise of various brands and various types of IC DIP, SMD diode and audion, infrared emission, acceptance control, battery and a variety of modules, crystal and so on, have a wealth of electronic product manufacturing and sales experience and a good international reputation, the company covers product sales AT, MAXIM, PHILIPS, DS, TI, CYPRESS, ST, ON, such as international brands; Products widely used in networking, computer, aerospace, communications, electronic instrumentation, display control, industrial control, medical equipment, access control, POS terminals, audio home appliances and consumer electronics products such as high-tech fields.

公司专营各种品牌IC和各类直插、贴片二三极管，红外发射，接受管，电池以及各种模块、晶振等，有丰富的电子产品生产与销售经验和良好的国际信誉，公司产品销售涵盖了AT，MAXIM、PHILIPS 、DS、TI、CYPRESS、ST，ON等国际知名品牌；产品广泛用于网络、电脑、航天、通讯、电子仪表、显示控制，工业控制、医疗设备、门禁、POS终端、家电音响及消费类电子产品等高新领域。

It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

The transmit part adopts the phase-locked loop pattern of frequency synthesizing technology and uses the MC145152 and MC12022 chips to compose the phase-locked loop.It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

Because the rank of the augmented channel matrix is always equal to the number of transmitting antennas, the algorithm can work well in an ill-conditioned channel.

由于扩展信道矩阵的秩等于发射天线数，该算法对信道缺秩的情况不敏感。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。