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In comparison with the switches based on other polytypes of SiC, the design benefits from having fewer lattice mismatches between the SiCGe and 3C-SiC. A maximum common emitter current gain of about 890 and superb light-activation characteristics may be achievable. The performance simulation demonstrates that the device has a good I-V characteristic with a turn-on voltage knee of about 4V.

结果表明,与采用其他结晶类型的碳化硅衬底相比,SiCGe与3C-SiC间较小的晶格失配有利于提高器件性能,可使其最大共射极电流增益达到890,获得最好的光触发特性和较好的I-V特性,饱和压降大约为4V。

Results and Conclusion The smaller firm can raise its production and profit by adopting tactics of compatibility of product on the condition of positive network externality.

结果与结论当存在正的网络外部性时,规模较小的企业通过采用兼容性策略,可以提高其均衡产量,实现较大的利润。

The results showed that:(1) we can mapping quantitative trait locus while estimating the variance component of QTL;(2) granddaughter design is better than daughter design when mapping QTL;(3) it is easy to map a QTL for trait with a high heriability and a large QTL variance contribution;(4) we can estimate the variance component of a QTL by TM-BLUP based on ML method whether the QTL has only 2 alleles or QTL has normal distributed alleles effects;(5) the estimation accuracy of variance component contributed by QTL was improved by using of grand daughter design;(6) the higher the heritability and the QTL variance contribution was, the more accurate estimation of QTL variance component.

结果表明:(1)采用随机QTL效应模型和最大似然法,在估计QTL方差组分的同时,能够定位QTL;(2)孙女设计与女儿设计相比,在其它因素相同时,容易检出QTL;(3)遗传力高,QTL方差贡献较大的性状,QTL检出的效果优于遗传力低,QTL方差贡献较小的性状;(4)无论QTL上有2个等位基因,还是QTL上等位基因的效应服从正态分布,都可将其看作随机效应,采用基于TM-BLUP的ML法,估计其方差组分和定位QTL;(5)QTL方差组分估计的准确性,孙女设计高于女儿设计;(6)遗传力高的性状,QTL方差贡献大的QTL,QTL方差组分估计的准确性高。

The experimental results show that this method is of higher compression ratio and smaller compression error.

实验结果表明,该方法具有较高的效率,能够得到较小的压缩误差。

Conditional information entropy was used to compute relevance of attributes and it was used in fitness function to assure reduction has fewer attributes and relevance of attributes.

利用条件墒计算属性问的相关性,并将其引入到适值函数中,可以保证所求约简含有较少的属性而且属性间的相关性较小

The factors which should be considered in BP training are found and program is compiled by C++ Builder. Good agreements are obtained by training 30 runs of lower concentration, middle concentration and hyproconcentration flow. The conjunctional functions are memoried and used to pr...

找出了进行BP神经网络训练时应考虑的水沙要素,采用C ++Builder语言编制的程序,对 3 0组高、中、低含沙量的水槽试验资料进行训练,发现训练值与实测值符合较好,说明得到的连接权能反映实际情况;用该连接权对 4组试验数据进行了预测,预测结果与实测值相差较小,表明用BP神经网络方法确定挟沙能力的可行性。

Finally, an example is given to illustrate that the derived results are of less conservativeness than the existing ones.

数值例子表明本文方法所得结论较已有文献具有较小的保守性。

More suitable than DZ-50 relay. Additionally, If we keep the time constant term the same, it is more reliable to choose a bigger condenser match up with a smaller charge resister, also parallel two condenser to instead of a same capacity condenser to instead of a same capacity condenser is more reliable and easy for manufacture.

同时,认定在保持电容器一定充电时间常数的条件下,以选择电容量较大的电容器配较小的电阻值的充电电阻器,以及用两只电容器并联代替一只相同电容量的电容器时,使装置性能更加稳定,提高装置动作的可靠性,并便于生产。

Rinted-circuit board air-core coils designed by using CAD tools and fabricated by adopting advanced PCB manufacturing technology are good in measurement accuracy and consistence of products parameters. But the characteristics of limited turns-density and large magnetic induction intensity grads on coil cross-section make great influence on the continuous uniform distribution of coil turns along the coil circumference and cause its discrete distribution.

CB空心线圈采用CAD方法设计和先进的PCB加工工艺制造,具有很好的测量精度和参数一致性,但是,线匝密度较小,而且截面上磁感应强度梯度较大,从而影响了线匝沿圆周均匀分布的连续性,使其具有了离散分布特征。

The convergence theorem of the presented ANN algorithm was proposed and proved, and the simulation cases of harmonic analysis by use of the presented algorithm were given.

仿真结果表明,文中提出的谐波测量方法的计算精度极高,且计算量较小,因此在电力系统谐波测量中有较高的应用价值。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。