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The gap of our country in this field is filled in. 5. The performance fade of general room-temperature bipolar junction transistor at low temperature is simulated, for instance, the current gain, the cut-off frequency, the base resistance and the base-to-emitter capacitance.

以PISCES—2B中的模拟实例——二极管为例，阐述了所开发的半导体器件模拟软件包SE-PISCES的性能，可进行50K-350K下的稳态分析、瞬态分析和交流小信号分析。

For better radar emitter recognition,a study is carried out in this paper on the attribute reduction algorithm,which is based on discernibility matrix and logical operation in Rough Sets.

为准确解决辐射源识别问题，研究了粗糙集中基于可辨识矩阵和逻辑运算的属性约简算法，对决策表进行约简，减少了属性个数；并建立了一种基于粗糙集数据处理的雷达辐射源识别模型。

The invention discloses an emitter and a receiver of a microwave measuring system of the pulverized coal concentration of electric station boilers which are positioned in a staggered way.

本发明公开了一种错位放置的电站锅炉煤粉浓度微波测量系统的收发器。

The emitter and the receiver of the microwave measuring system add a measuring travel, completely utilize the Doppler effect, enlarge the microwave absorptive attenuating action of the pulverized coal, and consequently increase the measured voltage difference, avoid the problems of the reflection measurement, and can accurately measure the pulverized coal concentration value.

本发明增加了测量沿程，充分利用了多卜勒效应，增大了煤粉对微波的吸收衰减作用，从而增大了测量的电压差值，而且避免了采用反射测量时出现的问题，能准确的测出煤粉浓度值。

Transmitter is composed of 555 core multivibrator, by changing the oscillator frequency to adjust the frequency of infrared emitter, and can adjust the resistance to reduce the infrared signal duty cycle to increase as much as possible infrared the scope of protection.

详细说明：发射电路是以555为核心组成多谐振荡器，通过改变振荡器的工作频率来调节红外发射器件的工作频率，且可以通过调节电阻来减小红外信号的占空比，从而尽可能地增加红外防护的范围。

Similarly China, soon to be the world's largest greenhouse-gas emitter, was, until this year, an obdurate opponent of negotiating beyond Kyoto.

同样的，中国，这个很快就要成为世界最大的温室气体排放的国家，直到今年都还反对进行超出《京都议定书》范畴的谈判。

The third chapter of the thesis discusses a novel paraboloidal lensed multimode fiber used in the fiber coupling of the high power single emitter broad area diode laser, and the results of the computer aided simulation of the coupling have been described too, the results verified the theory of paraboloidal lensed multimode fiber.

第三章详细讨论了利用抛物面型微透镜多模光纤与大功率宽发射域半导体激光器的耦合效率；利用计算机辅助模拟了耦合过程，并通过实验验证了耦合系统的可行性。

In contrast, if the emitter ledge is too thin, it may not effectively passivate the surface.

相对的，假如射极突出部太薄，将无法有效抑制表面复合电流。

Results indicated that the steady-state model of constant-head well permeameter could be used to design the emitter discharge rate for different water-conducting device specifications and soil types.

研究结果表明，用于描述恒定水头钻孔积水入渗法求解土壤饱和导水率的稳态模型能够较好地设计与不同类型土壤和导水装置尺寸相匹配的适宜滴头流量。

When choosing a value for R6, ensure that Q2's base-emitter voltage is less than approximately 0.5V at the maximum permissible value of the load current.

选择R6的阻值时要确保在负载电流的最高允许值的条件下，Q2的基极-发射极电压大约低於0.5V。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失