发射的

This thesis proposes a kind of soft firing technology , which combines interior ballistics with atmospheric pressure transmission theory , utilizing the energy of advancing primer ignition of piston promoting pill to counteract the counterforce of firing pill , utilizing unilateral valve on the piston to adjust automatically the gas pressures of two connected chamber in series in front and at the back of the piston, thus achieving the goal of reducing composition of forces of gun bore and increasing initial velocity of pill.

本论文提出一种软发射技术，是将气压传动理论和经典内弹道学相结合，利用活塞推动弹丸前冲击发的能量来抵消发射弹丸所产生的反作用力，利用活塞上的单向阀自动调节活塞前后两个串联药室的气体压力，从而达到减小炮膛合力和提高弹丸初速的目的。

The result shows that the movement of the propellant grains is complex and relative to the ignition system very much. Guns with center tube ignition and flame-spreading system can alleviate the accumulation of the propellant effectively, and will have better performance.

结果分析表明：火炮点火后膛内火药颗粒的运动情况十分复杂，其运动规律与点传火的方式密切相关，点火孔均匀分布的中心传火管点火方式可以有效的改善发射过程中火药颗粒在弹丸底部堆积的现象，获得更佳的发射效果。

A circle is placed at the launch point to improve the interaction between the electron beam and the fields supported by the slow wave structure, thus to control the beam current density at the launch point, and to minimize the loss of the electron beam energy. The inaner radii of the extractor vanes are slightly larger than those of other SWS vanes, which increases the axial group velocity and enhances the microwave output power and efficiency. Implementation of two RF choke vanes stops the leakage of microwave pulse power toward the diode, and makes the device more compact than the conventional MILO.

该振荡器在阴极电子发射起点加圆环，控制此处电子束的发射密度，来减少电子能量的损耗，改善束－波互作用；逐渐加大慢波结构的后两个叶片的内半径，增大微波群速度，便于谐振腔中的能量输出，提高微波输出效率；采用两个扼流片有效地阻止了微波功率向二极管区泄漏，相应减小了器件的尺寸。

By simulating the absorption spectrum of molecule iodine absorption filter ranges from 470nm~550nm, this paper selects the absorption spectrum of molecule iodine absorption filter that satisfies the requirement of frequency discriminator in detecting system and ascertains the center emission frequency of laser emitter.

以基于边缘探测技术的激光雷达监测大气信道和海洋水下信道环境参数为例，通过仿真出碘分子吸收滤波器在470nm～550nm区间范围内的吸收光谱谱线，选择出合适的吸收谱线并确定发射激光信号的中心频率，并在此基础上，给出了满足探测要求的激光发射信号单稳频指标，为实际探测系统的设计奠定基础。

As a nondestructive technique to measure the inner fine structure of the cathode, the ICT has the uniqueadvantage.We discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by Richardson formula and Mullers computational model.

4就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和Muller计算机模拟法解释了混合基钡钨阴极的优良性能。

When the launched SNR is more than the threshold, the cognitive network is an inter-user interference limited system, the base station selects the stochastic wave forming mode of a single beam and selects the user which has the maximum received SNR from the sub-scribers as a current communication object; when the launched SNR is less than the threshold, the sub-scriber network is a noise interference limited system. The base station selects the opportunistic SDMA of multi-beams and then selects a plurality of scribers with the maximum received SNR from the sub-scribers as the communication objects, thus realizing the maximization of system capacity.

当发射信噪比大于门限值时，认知网络为用户间干扰受限系统，基站选择单波束的随机波束成型模式，在从用户中选择接收信噪比最大的用户作为本次的通信的对象；当发射信噪比小于门限时，从用户网络为噪声干扰受限系统，基站选择多波束的机会式空分多址模式，在从用户中选择信噪比最大的几个用户作为通信对象，从而实现了系统容量最大化。

Microcontroller through the infrared sensor part and the voice-activated sensor part of the coming changes in the signal to determine whether there are outsiders, if sent through the speakers or the diode to the police; infrared sensors, infrared emission through the launch tube to the receiving tube, two between elements of a connecting via infrared, when there are objects stand in the middle, they then pass on the changes in level microcontroller; Similarly, voice-activated sensor is converted into electrical signals into acoustic signals and then transmitted to the microcontroller; keyboard is used to set the alarm trigger conditions.

单片机通过红外传感部分和声控传感部分的传来的信号的变化来判断是否有外来者，如有则通过扬声器或者发给二极管来报警；红外传感器是通过发射管发射红外线到接收管，两个元件之间通过红外线进行连接，当有物体挡在中间时，便把电平的变化传给单片机；同理，声控传感器是把声音信号转换为电信号然后传送给单片机；键盘是用来设置报警触发的条件。

Then the major rule of different structure parameters" effects on weapon performance are found, which can provide theoretical basis for the further design of the weapon.An innovative principle concept for "Canister Rifle hitched on the Gun is put forward based on the analysis of the above three concepts.

在对三种方案分析的基础上，本文还提出了一种具有较大创新的枪挂霰弹发射器的原理方案，该方案能够更进一步提高火药气体的能量利用效率和枪挂霰弹发射器的威力。

In this paper, in terms of diffusion equation of neutral gas in thermosphere and main ion-chemistry reactions in ionospheric F region, the diffusion processes of H2, H2O and CO2 and ionospheric response to released gases are investigated.

根据中性气体在热层背景中的扩散方程，考虑电离层F区主要的离子化学反应，研究了H2，H2O和CO2气体在电离层高度上的扩散过程和电离层对所释放气体的响应，计算了气辉的体发射系数和发射强度。

For the emission bands which have difference from the theoretical values or some reports,we first illustrate the shifts,broad and splittings of emission bands by the method of comparing and analyzing the relationship between the absorption spectra and the emission spectra,as well as the connection between the structure and the spectra.

特别是对一些与理论值和文献报道值有差异的发光谱带，是我们首次采用将化合物的电子吸收光谱与发射光谱相关联的理论方法进行对比和解析，同时又将化合物结构与光谱相关联，来解释所产生的发射谱带的位移、加宽和劈裂现象。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。