发射地

Excitation functions of neutron, proton and α particle emission prior to scission measured in the reactions 28 Si+ 164,167,170 Er→ 192,195,198 Pb are studied using an extensive fission diffusion model and it is found that the model can well describe the trend of particle multiplicities of Pb isotopes measured experimentally as a function of the bombarding energy,which indicates the existence of isotope effects in prescission particle emission.

用推广的裂变扩散模型研究了2 8Si+16 4，16 7，170 Er→192 ，195，198Pb反应中测量的断前中子、质子和α粒子多重性的激发函数。发现扩散模型能很好地拟合这些轻粒子多重性随裂变系统激发能和Pb同位素的变化趋势。表明断前粒子发射存在一个同位素效应。进而在一个考虑了裂变过程中摩擦效应的统计模型的框架内，在In和Er这两个元素的同位素链中，考察了同位素效应与裂变碎片质量不对称性和裂变系统尺度的关系。计算结果表明：同位素效应的存在不依赖于裂变系统的大小和不对称性。此外，当裂变系统具有高的中质比时，轻带电粒子发射将不再敏感于裂变延迟时间的长短，而中子发射则非常敏感。

MIRVing these weapons would increase the effectiveness of each launcher, and when combined with the PLAN's evolving SSBN fleet would allow a smaller number of launch platforms to serve as a counterforce option and credible deterrent to any nuclear strike, should a "launch on warning" posture be adopted with sufficient support assets.

这些导弹的分导式多弹头改装将增强每部发射车的作战效能，结合中国海军发展中的弹道导弹核潜艇，就可以实现在少量发射平台的情况下执行反击任务，并且在有足够资源配合的情况下摆出一个&发射警告&的姿态，可靠地威慑任何核攻击行为。

A counterstrike mission. MIRVing these weapons would increase the effectiveness of each launcher, and when combined with the PLAN's evolving SSBN fleet would allow a smaller number of launch platforms to serve as a counterforce option and credible deterrent to any nuclear strike, should a "launch on warning" posture be adopted with sufficient support assets.

这些导弹的分导式多弹头改装将增强每部发射车的作战效能，结合中国海军发展中的弹道导弹核潜艇，就可以实现在少量发射平台的情况下执行反击任务，并且在有足够资源配合的情况下摆出一个&发射警告&的姿态，可靠地威慑任何核攻击行为。

A counterstrike mission. MIRVing these weapons would increase the effectiveness of each launcher, and when combined with the PLAN's evolving SSBN fleet would allow a smaller number of launch platforms to serve as a counterforce option and credible deterrent to any nuclear strike, should a "launch on warning" posture be adopted with sufficient support assets.

这些个导弹的分导式多弹头改装将增强每一部发射车的作战效能，联合神州海军成长中的弹道导弹核潜艇，就可使成为事实在少量发射平台的情况下执行还击使命，并且在有足够资源共同的情况下摆出一个&发射正告&的仪态，靠得住地威慑任何核攻击行为。

Aring; of nanometre LaOx particle . On the basis of the results of the previous chapters , a new thermionic emission mechanism was put forward.

薄膜&发射新观点，解释金属薄膜型阴极的热电子发射机理，更深入地揭示热电子发射的内在规律。&

In order to obtain more exact analytical solution to study the output characteristics of double-clad fiber lasers,according to the continuous-wave rate equations of fiber lasers,using typical parameters of double-clad fiber lasers,the contribution of the re-emission effect arising from the interaction between the upper-level atoms and pump light was estimated.Taking into account the predominant part of the re-emission to improve the accuracy of the integration approximated rate equations,the integration of the product of the loss and radiation should be found and explicit analytical expressions for the output of the DCFLs and gradient efficiency of the pump radiation,were deduced,and certain issues of concern were discussed.

为了求得用于研究双包层光纤激光器输出特性的更为精确的解析解，根据稳态速率方程组，针对典型的双包层光纤激光器参量，在估计了上能级粒子再发射项和抽运光产生的影响后，采用保留再发射贡献主导部分的办法以提高可积分近似方程的精确度，明确地提出了要获得光纤激光器输出功率的解析表达式的关键在于求出损耗系数与光场乘积的积分值，简洁地求得了输出功率和抽运光斜线效率的显函数解析表达式，并对其相关问题进行了讨论，以915nm，920nm和975nm的抽运光为例，当输出激光为1090nm时，得出975nm抽运光产生的斜率效率最高并可高达约87%。

We have come to the following conclusions:(1) the existence of the monoatomic layer is conditional, it depends upon the temperature, surface structure and purity of the substrate as well as upon the vacuum environment;(2) the appearance, and sometimes disappearance, of the emission peaks is a problem for further study, and it can not be explained simply by the monoatomic layer...

关于时而能、时而又不能观察到的电子发射峰值，是一个有待于进一步明确的现象，不能简单地用单原子层和偶极子理论来解释；3。吸附了外界原子或分子使电子发射增加的事实，并不是由于偶极矩降低了基底的逸出功，发射的电子来源于被吸附物质的价电子；4。实验证明&L&阴极是Ba-O-W系统，它既不是单原子层，也不是单分子层，也不适用偶极子理论。

This invention discloses a power control method based on mixed automatic retransmitting mechanism in which the user end checks received data packet and to feed back to the base station ACK message if the result is correct, and the base station sends the next data packet according to the emitting power of last data packet, if not, sends back NA CK message and quality information of received data packet, the base station will adjust the transmitting power of retransmitting data packet and retransmits the said data packet to guarantee the retransmitting efficiency of the data packet, reduce resource lost of the system to the ulmost and reduce signal interference among different users.

本发明公开了一种基于混合自动重传机制的功率控制方法，该方法通过用户端对接收到的数据包进行校验，当结果正确时，向基站反馈ACK消息，由基站按照上一个数据包的发射功率发送下一个数据包，否则，向基站反馈NACK消息，以及接收到的数据包的质量信息，基站根据所述数据包的质量信息，调整重传数据包的发射功率，并重新发送所述数据包，采用上述方案对发送失败的数据包重传时根据数据包的总质量信息配以不同的发射功率，从而可以在保证数据包重传效率的基础上，最大限度地减少系统的资源消耗，减少不同用户之间的信号干扰。

This invention discloses a power control method based on mixed automatic retransmitting mechanism in which the user end checks received data packet and to feed back to the base station ACK message if the result is correct, and the base station sends the next data packet according to the emitting power of last data packet, if not, sends back NA CK message and quality information of received data packet, the base station will adjust the transmitting power of retransmitting data packet and retransmits the said data packet to guarantee the retransmitting efficiency of the data packet, reduce resource lost of the system to the ulmost and reduce signal interference among different users.

抜粋 本发明公开了一种基于混合自动重传机制的功率控制方法，该方法通过用户端对接收到的数据包进行校验，当结果正确时，向基站反馈ACK消息，由基站按照上一个数据包的发射功率发送下一个数据包，否则，向基站反馈NACK消息，以及接收到的数据包的质量信息，基站根据所述数据包的质量信息，调整重传数据包的发射功率，并重新发送所述数据包，采用上述方案对发送失败的数据包重传时根据数据包的总质量信息配以不同的发射功率，从而可以在保证数据包重传效率的基础上，最大限度地减少系统的资源消耗，减少不同用户之间的信号干扰。

This invention discloses a power control method based on mixed automatic retransmitting mechanism in which the user end checks received data packet and to feed back to the base station ACK message if the result is correct, and the base station sends the next data packet according to the emitting power of last data packet, if not, sends back NA CK message and quality information of received data packet, the base station will adjust the transmitting power of retransmitting data packet and retransmits the said data packet to guarantee the retransmitting efficiency of the data packet, reduce resource lost of the system to the ulmost and reduce signal interference among different users.

要约 本发明公开了一种基于混合自动重传机制的功率控制方法，该方法通过用户端对接收到的数据包进行校验，当结果正确时，向基站反馈ACK消息，由基站按照上一个数据包的发射功率发送下一个数据包，否则，向基站反馈NACK消息，以及接收到的数据包的质量信息，基站根据所述数据包的质量信息，调整重传数据包的发射功率，并重新发送所述数据包，采用上述方案对发送失败的数据包重传时根据数据包的总质量信息配以不同的发射功率，从而可以在保证数据包重传效率的基础上，最大限度地减少系统的资源消耗，减少不同用户之间的信号干扰。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。