查询词典 spontaneous emission

Modern spectral estimation method was used for the characteristic analysis of signal of inductively coupled plasma atomic emission spectrometry in frequency domain.

将现代谱估计方法用于电感耦合等离子体原子发射光谱信号的频域特性研究。

Combining with the temporal and spatial distribution spatial distribution species radiation intensity,the detailed mechanism of the generation of laser induced species radiation was discussed, the continuous radiation comes from the Bremsstrublung emission of energetic electrons ejected from the target and recombination of electron and ion near target, the primary mechanism of atomic excitation and ion excitation in plasma is inelastic collision between the elemental species and high-kinetic energy electron,the model can explain the experimental results qualitatively.

讨论了激光诱导发光的机理，认为等离子体羽中连续辐射背景光主要来自近靶处高能电子的韧致辐射和电子与离子的复合激发，原子和离子光谱线主要由等离子体中高能电子的碰撞传能激发所引起，并用之较好地解释了所观察的实验现象。

On the other hand, now the development of petrol and diesel engine technology are so quickly, they are reduce the gap very quickly between the inexpensiveness and emission of fuel and new energy cars.

另一方面，现在汽油和柴油发动机的技术发展也很快，它们在燃油经济性和排放上与新能源车的差距缩减得也很快。

The modified expression of the broad emission-line profiles ire derived for the outflow kinematics model of the BLR driven by the radiation pressure. Taking into account the difference between the two lines HeI λ5876 and Hβ, it is shown the fact that the observed line width of HeIλ 5876 is broader than that of Hβ cannot be explained by the popular outflow BLR model evoked by W. G. Mathews. For comparison, line profiles of the gravitational infall model and orbital disk model are also calculated; the later is in good agreement with the observations Thereupon, conclusion is reached that the gravitational infall is an important process in the real BLR gas motion.

1推导了辐射压加速宽线云团径向外流，以及引力下落和转动等BLR运动学模型的谱线轮廓表达式，并考虑到光致电离计算表明的云团本身对Hβ和HeIλ5876谱线的辐射差异，用数值方法计算了它们的谱线轮廓，发现普遍流行的辐射加速气体外流模型不能解释HeIλ5876线宽大于Hβ线宽的观测事实，而引力下落模型则可以较好地解释观测，因此我们倾向于认为、径向内流运动很可能是BLR内的发射线云团真实运动的一个重要成分。

Union Electric does not mean that claims of infeasibility are never relevant, or that all sources unable to comply with generally applicable emission limitations must be shut down.

"联合电气公司"一案并不意味着不可行性的断定并非总是无关的，也不意味着把那些没有能力遵守普遍适用的排放限制的污染源关闭。

A special case is that two distinct arguments, which belong respectively to two subevents, compete for the same θ-role. What should be done then is to make one of the arguments implicit so that every θ-role is assigned to one argument only. When the verb means bodily emission or congestion, its highly inferable argument as the entity in motion is often made implicit too, leaving an empty space for the θ-role.

比较特殊的情况是分属于两个事件的不同论元争夺同一语义角色，这时须隐藏其中一个论元，使每一个语义角色分且仅分给一个论元；而当动词意为"体物外排"或"外物内纳"时，作为运动实体的论元因为不言自明也常被隐去，留下一个语义角色空位。

Besides, in the design of the infrared remote controller, the rationale of the remote controller is analyzed, and the hardware design of the emission and the reception circuit.

其次，在红外遥控器的设计中，分析了红外遥控器的基本原理，并进行了接收和发射电路的硬件设计。

through the analysis of the infrared emission coding, this paper presents a kind of design scheme of infrared remote controller based on the mcu at89s52.in this paper, the remote controller learns infrared code by pulse width measuring, saves code by index, outputs carrier wave by timer.

通过对红外遥控器发射编码的分析，提出了一种以单片机at89s52为核心的自学习型红外遥控器的设计和实现方案。在方案中采用测量脉冲宽度的方法来学习红外遥控编码，采用索引存储的方法来保存学习到的红外编码，采用单片机定时器来产生红外编码发射所需要的38khz红外载波。

Firstly, this thesis discussed the serious harm of the SPM emission on human and inhabitation environment, which means that it was important and necessary to study the SPM formation and controlling method.

本文首先论述了燃煤过程中颗粒物的排放对人类及环境所造成的严重危害，阐明了研究颗粒物形成与排放的重要性和必要性。

Relationships between the instantaneous emission / fuel consumption rate and the instantaneous speed/acceleration are first analyzed. Then, the emissions for a variety of vehicle types in the network are analyzed. Finally, the developed platform is used to evaluate the impact of alternative traffic control and management strategies for two scenarios.

本文首先建立了车辆的瞬间尾气排放率、燃料消耗率与瞬时速度、加速度之间的关系；然后，对研究路网的各种车型的尾气排放量进行分析和计算；最后，通过两个假设方案，对不同的交通管理与控制策略对于尾气排放的影响进行分析。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。