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(DCFLs),the contribution of the re-emission effect arising from the interaction between the upper-level atoms and pump light was estimated.
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%。
Some results about the re-emission spectrum, the re-emission flux, the albedo and the equivalent temperature at the boundary are given, and the variations of re-emission spectrum with the incident flux are analyzed.
利用一维多群辐射输运程序，数值研究了平面Ａｕ靶入射流强度对再发射谱、再发射流、反照率及边界等效温度的影响。
Some results about the re-emission spectrum, the re-emission flux, the albedo and the equivalent temperature at the boundary are given, and the variations of re-emission spectrum with the incident flux are analyzed.
利用一维多群辐射输运程序，数值研究了平面Ａｕ靶入射流强度对再发射谱、再发射流、反照率及边界等效温度的影响。
The kinetic energy falling onto the compact star simply heats the surface and is re-radiated as black-body radiation.
落到致密星上的动能只是简单地加热了星的表面，并以黑体辅射的形式再发射出去。
cast, hurl, or throw repeatedly with some missile.
用发射物再三投，掷或扔。
Get ready to fire that tow cable.
达克，先发射拖线再说！
It diffracts the diffracted beam which effectively means that it generates an inverse transform.
它对衍射光束再发生衍射，这实际上意味着它产生了一个逆变换。
Once the aircraft acquires the laser and is moments away from dropping their ordnance, shift the laser directly onto the enemy position.
一旦飞机飞机要求锁定目标准备发射，再转向直接照射敌人位置。
a bullet designed to be fired from a rifle; no longer made spherical in shape.
一种从步枪中发射出来的子弹；不再制成球状。
single-stage-to-orbit, horizontal-take-off-and-landing reusable space vehicle
单级入轨水平发射和着陆可再使用航天器
News of the launch of a new satellite was no longer a sensation.
新卫星发射的消息就不再是耸人听闻的事了。
Lagrange Problem On Interior Ballistics of Regenerative Liquid Propellant Gun
再生式液体发射药火炮内弹道的拉格朗日问题
Development of Standard Mould Bases Library in Redesign-oriented Injection Mould
面向再设计的注射模标准模架库的开发
By reducing the feedback of the cavity, a laser will no longer be self oscillatory but it will amplity an incident wave which has triggered stimulated emission.
减小腔的反馈，激光器就不再会自己振荡，而只是放大触发受激发射的入射波。
To send out rays or waves.
放射，辐射发出射线或波
x ray photoemission diffraction
x射线光电发射衍射
The crew of the space shuttle Atlantis is again preparing for launch.
航天飞机“亚特兰蒂斯”号的机组人员准备再次发射。
Should I take my insulin before I eat even if my blood glucose is low?
即使饭前发生了低血糖，我还是该注射胰岛素后再吃饭吗？
Study on Pressure Oscillation Mechanism and Suppression Measure of Regenerative Liquid Propellant Gun;
再生式液体发射药火炮压力振荡机理及抑制措施研究
Numerical Simulation of Pressure Oscillation in Combustion Chamber of Regenerative Liquid Propellant Gun
再生式液体发射药火炮燃烧室压力振荡数值仿真
Application of Reassigned Wavelet Scalogram in Feature Extraction Based on Acoustic Emission Signal
小波再分配尺度谱在声发射信号特征提取中的应用