查询词典 reverse biased

The results showed that the optimized content of Mg~(2+) was 5mmol/L; dNTP was 200μmol/L; Primer was 0.5μmol/L; Taq polymerase was lU/50ul in the PCR system. Only one fragment of about 270bp was amplified within the genome of 12 wild species and 23 cultivars of Mallus Mill., which indicated that Ty1-copia-like retrotransposons were archaic components of apple genome. The nested insertion of near and within the reverse transcriptase gene of Ty1-copia-like retrotransposons wasn\'t found in apple genome.2 The reverse transcriptase conservative region of Ty1-copia-like retrotransposons were amplified from Gala apple using the optimized PCR system. The amplification product was isolated, cloned and sequenced. Forty-five clones containing reverse transcriptase conservative region were obtained (accession number: AY849580 -AY849592 and DQ105035-DQ105066). Cluster analysis of these sequences showed a great heterogeneity among RT domains isolated from the same genotype.

从苹果属12个野生种和苹果23个栽培品种中都扩增到了约270bp的目的产物，且所有试材的扩增结果一致，均无目的条带以外的产物扩增，说明Ty1-copia类逆转座子在苹果属植物中广泛存在，且存在历史可能较为久远；从扩增结果看不出该逆转座子的逆转录酶基因或附近区域在苹果基因组内有嵌套行为的发生。2、利用优化了的PCR方法从嘎拉苹果基因组克隆了45条Ty1-copia类逆转座子逆转录酶保守序列(登陆号分别为AY849580-AY849592和DQ105035-DQ105066)，结果表明，同一基因组来源的这些序列存在高度的异质性。

The thesis analyzes the trait,sort,influence factors and principia of upbuilding of reverse logistics network.It demonstrates the inevitability operating reverse logistics for electrical home appliances using game theory.And then,the thesis sets up reverse logistics network for electrical home appliances,and optimizes it using multi-object MILP model.

文章分析了反向物流网络的特征、分类以及影响废旧家电回收反向物流构建的因素及构建原则；运用博弈论知识论证了进行废旧家电反向物流的必然性，在此基础上构建了废旧家电反向物流网络，运用混合整数线性规划模型对其进行优化。

At the same time, introduces systematically the history and current situation of displacement reverse analysis, describes the displacement reverse analysis theory of the elastic-plastic problem, and based on the actual project, this paper presents displacement reverse analysis in the application of the tunnel project.

同时，较为系统地介绍了位移反分析方法研究的历史与现状，叙述了弹塑性问题的位移反分析理论，并结合实际工程，研究了位移反分析在隧道工程中的应用。

Determination of reverse link performance may be done in variety of ways, including use of a filter percentage of ACK erasures, measured error rates on the reverse link control channel, reverse link data channel error rates, and other methods.

反向链路性能的确定可以通过各种方式进行，包括利用过滤后的ACK删除百分比，反向链路控制信道上的被测差错率，反向链路数据信道差错率，以及其它方法。

Reverse traffic can lead degradation of TCP performance. To resolve this problem, we analyze the impact of reverse traffic carefully, and obtain the relation between reverse traffic and TCP performance. We propose an approach of rate control optimized for unidirectional trip time, and design an algorithm for rate control, called Unidirectional Trip Aware Rate Control, UTARC.

针对反向数据流量会导致TCP性能下降的问题，本文详细研究了反向数据流量对正向数据流应答的影响，揭示了反向数据流量与TCP传输性能之间的联系，提出了面向单向延时优化的速率控制方法，并设计了相应的速率控制算法UTARC。

With this mode of working the base-emitter circuit is the input side;and the emitter through base to collector circuit the output side.although these have a common path through base and emitter, the two circuit are effectively separated by the fast that as far as polarity of the base circuit is concerned,the base and upper half of the transistor are connected as a reverse biased diode.hence there is no current flow from the base circuit into the collector circuit.

这一工作模式下，基极-发射极电路是输入端，发射极通过基极，再到集电极电路的输出端。虽然它们都有一个共同的路径通过基极和发射极，这两个电路是通过和基极电路相关的尽可能的有效快速分离开的，基极和基极以上的一半以上的晶体管作为一个反偏二极管与之相连接。

The saturable absorption and bistability are observed and based on this phenomenon, a new mode-locking scheme of modulating the saturable absorption section with RF signal forward and reverse biased respectively is proposed.

观察到了饱和吸收以及双稳现象，并据此提出了利用正/反向调制饱和吸收区的方法实现光纤光栅外腔激光器锁模调制的新机制。

The I-V characteristics of the diodes with 100μm diameter indicated that as the densities of V-defects on GaN films increased from 4.1×105cm-2 to 1.03×107cm-2, the Schottky barrier height decreased from 1.44eV to 1.19eV and the reverse bias leakage current at -1V is increased sharply from 10-10A to 10-7A . Further studies on a single V-defect using conductive atomic force microscope demonstrated that the value of forward current biased at 8V at V-defect side-walls appears to be one order higher than that of plain region, indicating that the conductivity mainly occurred at the side-walls of V-defect.

实验结果发现，随著V型缺陷密度由4.1×105cm-2增加至1.03×107cm-2，在氮化镓表面蒸镀镍金属所制成直径为100μm的萧基元件之所属能障从1.44eV下降至1.19eV，而且在-1V的操作下反向偏压漏电流从10-10A急遽的攀升至10-7A；为了了解V型缺陷对厘米尺寸n-GaN萧基元件电流传导机制之影响，我们进一步的利用导电原子力显微镜(Conductive Atomic Force Microscopy， C-AFM)，特别针对单一个V型缺陷进行微观电性之量测。

Another feature of electrolytic CAPACITOR s, both aluminium and tantalum, is that most of them are polarized and require a DC bias for correct operation - a reverse bias may do damage and will certainly increase leakage (unpolarized electrolytic CAPACITOR s, which may be biased in either direction, do exist but they are uncommon, and considerably larger than the polarized variety).

电解电容还有一个特点，那就是绝大多数都是有极性的，其两端必须施加直流电压才能正常工作。如果极性接反，电容就可能损坏，其漏电流也会增加。无极性电解电容虽然已经问世，但是相比之下不常用，而且外形尺寸也比有极性电容大。

Another feature of electrolytic capacitors, both aluminium and tantalum, is that most of them are polarized and require a DC bias for correct operation - a reverse bias may do damage and will certainly increase leakage (unpolarized electrolytic capacitors, which may be biased in either direction, do exist but they are uncommon, and considerably larger than the polarized variety).

电解电容还有一个特点，那就是绝大多数都是有极性的，其两端必须施加直流电压才能正常工作。如果极性接反，电容就可能损坏，其漏电流也会增加。无极性电解电容虽然已经问世，但是相比之下不常用，而且外形尺寸也比有极性电容大。

He became prime minister in 1997 and won international acclaim for his role in the Northern Ireland peace process.

他在1997年成为总理，并且因为在北爱尔兰的和平进程中发挥的作用受到国际社会的赞许。

Mixed Page Sorting Method Using the cuttable user model, this thesis proposes a mixed page sorting method by using cutted user model in server-side and complete user model in client-side.

隐私分级利用的混合式页面排序方法针对个性化搜索中搜索结果排序的问题，本文利用隐私可控开放的用户偏好模型，提出一个在客户端和服务器端分步进行的隐私分级利用的混合式页面排序方法。