发射效率

该模型考虑了低温下多子和少子的冻析效应、禁带变窄效应、Auger复合、多晶硅发射效率增强效应等。

Low temperature models of current gain of the transistor are given , which include apparent bandgap narrowing , enhancement of emitter efficiency of poly-Si , Auger recombination , carrier freezing-out , etc.

结果表明多晶硅发射极晶体管具有较高的发射效率，高的电流能力，改善了EB击穿和CB击穿。

It is shown that better emitter efficiency , high current carrying capability , and improved emitter base breakdown as well as collector base breakdown can be achieved for transistors with polysilicon emitters .

MRI射频线圈的发射效率

The Power Efficiency of MRI RF Transmitter Coil

低压电网基于发射效率的OFDM比特分配算法

Bit Allocation Algorithm for Low Voltage Network OFDM Systems Based Transmitted Efficiency

原子力显微镜（AFM）对样片的表面形貌分析表明，样片具有平滑的表面，有利于提高冷阴极的发射效率。

A smooth surface of the sample is observed by atom force microscope ( AFM ), which is benefit for increasing the emission efficiency of the cold cathode .

VLSI和ULSI中MOST的寄生双极晶体管是短基区，发射效率起主要作用。

The device size is small in VLSI and ULSI . The base width of a parasitic transistor is shorter , and emission efficiency dominates .

用溶胶凝胶方法制备了平均粒径为1～2μm的小颗粒、高发射效率的（Y，Gd）BO3∶Eu红色发射荧光体。

Red emitting phosphors ( Y , Gd ) BO_3 ∶ Eu , with mean size of 1 ~ 2 μ m were prepared by a sol-gel process combined with a furnace firing .

与纯P（LN）ZT压电陶瓷相比，1-3型聚合物/水泥基压电复合材料厚度方向振动增强，机械品质因数Qm明显降低，这有利于提高超声换能器的发射效率和接收灵敏度。

Compared with P ( LN ) ZT , the thickness vibration mode of 1-3 type piezoelectric composites is strengthened obviously , but electromechanical quality factor Q-m is reduced . All of these are in favor of increasing the emission efficiency and receiver sensitivity .

线性调频超宽带（Chirp-UWB）系统具有截获概率低、发射效率高、频谱设计灵活等优点，在多种领域有着广阔的应用前景。

Due to the low interception , high transmission efficiency and high flexibility in spectrum design , the extended distance Chirp Ultra wideband ( Chirp-UWB ) system has broad application prospects in many wireless communication domains .

一种提高卫星光通信终端发射效率的新方法

A Novel Method to Improve the Emission Efficiency of Satellite Optical Communication Terminal

透射式光阴极的厚度，直接影响光阴极的光电子发射效率和光谱响应。

The thickness of transmission-mode photocathode affects directly its photoelectric efficiency and spectral response .

脉冲激发三能级体系半导体量子点的单光子发射效率

Efficiency of single photon emission in three-level system of semiconductor quantum dots with pulsed excitation

指明了进一步提高电热化学发射效率的技术途径。

This study points out the way to further improve the efficiency of electrothermal chemical launch .

有选择地提高联合双原子高次谐波发射效率的一种方法

A Method for Selectively Enhancing the Efficiency of the High-order Harmonic Generation of a Joint Atoms Model

研究了若干种主动声纳梳状谱信号的发射效率、测量精度以及基于多普勒的抗混响性能。

This paper researches several comb waveforms on their transmitting efficiencies , resolutions in range and reverberation suppression properties based on Doppler shift .

分析表明，该系统的辐射速率可以增强100倍左右，这将有利于光子发射效率的提高。

The system dynamics are characterized in that , 100-fold increase in radiation rate will be observed , which indicates high collection efficiency ;

研究表明，采用窄脉冲宽度，当输入脉冲面积在π附近时可以得到较高的单光子发射效率。

It is revealed that high efficient single photon emissions can be realized in this system when excited with input pulse area about π and short pulse width .

在压力作用下，这两个吸收带表现出不同的压力效应，并且在不同的压力下分别激发这两个吸收带时，所得到的荧光发射效率随压力的变化趋势表现出明显的不同。

Effects of pressure on these two absorption bands are quite different and the emission intensity may change with pressure in a different way for excitation at different band .

据此，提出了一个有效解决这个难题的组合激光脉冲方案，从而将高达Ip+8Up的超高次谐波的发射效率提高了三个数量级以上。

To overcome this difficulty we proposed a strategy using combined pulses , under which the emission efficiencies near the photon energy Ip + 8Up are promoted over 3 orders of magnitude .

本文通过一定模型的运算，得到了选取固体电枢最小质量的根据，并通过对设计电枢进行试验，得到了一些改进电枢、提高发射效率、减少烧蚀的结果。

A term is given for choosing the least quality solid armature by calculating on some model , some results in improving projecting efficiency and reducing erosion are gained by experimenting on armatures designed by us .

半导体探测器中带电粒子发射吸收效率的计算方法

Calculation Method of Absorption Efficiency for Charged Particle Emission in Silicon Detector

采用能量损失计算和分层近似，发展了1套在半导体探测器中的带电粒子发射吸收效率计算方法，计算结果与实验结果符合良好。

By using the energy loss calculation and layer approximation , the calculation method of absorption efficiency for charged particle emission in silicon detector was developed . The calculated result is in good agreement with experiments .

荧光染料发射区量子效率及其配色

Quantum Efficiency in Emission Area of Fluorescent Dyes and Its Color Matching

这个经过长期讨论的基地，将比中国的三个北方内陆发射中心更有效率、更经济，成为中国航天业积极扩张中的一大优势。

The long-discussed base in southern Hainan Province would offer a more efficient and economical location than China 's three northern inland launch centres , an important advantage amid an aggressive expansion of the national space industry .

在窄脉冲宽度的脉冲激发下，单光子的发射概率p和效率η都随着强度的增强而产生振荡。

For short pulse width , the probability of single photon emission p and the efficiency of single photon emission η oscillate as the excitation intensity increases .

五磷酸钕的发射截面和荧光效率

Emission Cross Section and Fluorescence Efficiency of Nd-Pentaphosphate

等离子体与火药的作用规律是影响电热化学发射中能量利用效率的关键因素。

The interaction of plasma with propellant is the pivotal factor that influences energy efficiency of electrothermal chemical launch .

结合对阴极发射性能发射均匀性的研究，如果扩大现有激光光斑预计可以获得更大的发射电流以及量子效率。

According the results of cathode photoemission uniformity more current and higher quantum efficiency may be achieved with a larger laser spot .

在高真空腔内进行的场发射测试结果表明：当栅极电压高于3V时就观察到了电子发射现象，而且它的发射特性符合场发射的F-N理论，但发射效率低。

The field emission was measured in high vacuum chamber after introducing an anode that was applied a high voltage to collect the emitted electron . When the gate bias was higher than about 3V , the electron emission was observed . The electron emission follows F-N theory .