查询词典 barrier gate

From the potential energy profile, it can be predicted that, the dominant channel of this reaction consists of three steps: the two reactants first form a three-membered ring intermediate (INT1) through a barrier-free exothermic reaction of 19.2 kJ/mol; three-membered ring intermediate (INT1) isomerizes to a four-membered ring silylene(P2) via the transition state (TS2) with an energy barrier of 22.8 kJ/mol; four-membered ring silylene(P2) further reacts with ethene(R2) to form a silicic bis-heterocyclic compound (P3), which is also a barrier-free exothermic reaction of 132.2 kJ/mol.

用CCSD//MP2/6-31G*方法研究了单重态二甲基亚烷基硅烯与乙烯生成硅杂双环化合物环加成反应的机理，根据该反应的势能面可以预言，该反应的主反应通道有三步组成：第一步是两反应物（R1， R2）首先生成了一三元环中间体（INT1），它是一无势垒的放热反应，放出的能量为19.2 kJ/mol；第二步是三元环中间体(INT1)经过渡态TS2异构化为了四元环硅烯（P2），其势垒为22.8 kJ/mol；第三步是四元环硅烯（P2）进一步与乙烯(R2)反应生成了硅杂双环化合物（P3），该反应也是一无势垒的放热反应，放出的能量为132.2 kJ/mol。

The n-type gate modulation could be explained by the bending effect of valence band in the Schottky-barrier junction. The photoconductive diode and optical switch behavior was demonstrated for the first time from a C/CNX multi-walled nanotube junction with a Schottky barrier. Theconductivity of nanotube can be reversibly changed by 3 to 4 orders of magnitude when the 5 mW cm2 white lights was turned on and off.

器件原理是栅极静电场调节碳纳米管和CNx纳米管间的Schottky势垒的高度和宽度，从而影响载流子的传输。8首次利用单根CN万／C纳米管作为半导体材料制备了Schottky光导二极管和光开关。

SBD is the use of metal and semiconductor contact with the formation of metal - semiconductor barrier made of, so it is a thermal emission diode, with the manufacturing process of continuous improvement and the emergence of special materials, Schottky barrier gate and high-speed FET Large-scale integrated circuit and ultra-large-scale integrated circuits wide field of applications, Schottky diodes on the application of more and more widely.

SBD是利用金属与半导体接触形成的金属-半导体势垒制成的，因此，它是一种热电子发射二极管，随着制造工艺的不断完善及特殊材料的出现，肖特基势垒栅FET及其高速大规模集成电路和超大规模集成电路领域的广泛应用，肖特基二极管的应用范围也越来越广。

An analytic expression about FN tunneling current has been obtained using the WKB approximation,as well as the barrier that includes a transition region,which can be applied to estimate the width of barrier transition region for the gate oxides of thin MOS structures.

给出了一种利用WKB近似所得的处理电子隧穿存在转变区势垒的过程，并得到一个FN电流的分析表达式。

SBD is theuse of metal and semiconductor contact with the formation of metal- semiconductor barrier made of, so it is a thermal emission diode,with the manufacturing process of continuous improvement and theemergence of special materials, Schottky barrier gate andhigh-speed FET Large-scale integrated circuit andultra-large-scale integrated circuits wide field ofapplications, Schottky diodes on the application of more and morewidely.

SBD是利用金属与半导体接触形成的金属-半导体势垒制成的，因此，它是一种热电子发射二极管，随着制造工艺的不断完善及特殊材料的出现，肖特基势垒栅FET及其高速大规模集成电路和超大规模集成电路领域的广泛应用，肖特基二极管的应用范围也越来越广。

The effects of AlN spacer layer on AlGaN/GaN HEMTs are studied, and the results show that the insertion of AlN spacer layer can improve gate schottky barrier and decrease gate leakage current.

研究了AlN阻挡层对AlGaN/GaN HEMT器件性能的影响，结果表明，AlN阻挡层的增加提高了栅肖特基势垒，增加器件的关断电压，降低了栅泄漏电流。

These improvements are attributed to the Schottky barrier height increase and the decrease of the gate to channel distance as Pt sink into the InGaP Schottky layer during gate sinking process.

这些特性上的改善源自於Schottky barrier height的增高；在退火后，因为铂扩散下沈的制程，使得闸极至通道的距离减低。

We first review the basics of silicon-based donor spin quantum computer proposed by Kane, and how to control the system and construct the quantum gates, including Hadamard gate, CNOT gate and so on, in canonical gate decomposition ways.

首先，我们回顾肯恩的矽基底施子自旋量电脑系统，如何控制及构成量子逻辑闸，包括：阿达马逻辑闸、受控制否逻辑闸等等。

Hydraulic cylinder piston rod connects gate ,the operation principle of manual hydraulic knife gate valve is that through manually handle , manual- driven hydraulic pump makes hydraulic fluid in the upper and lower chamber of hydraulic cylinder to drive gate opened and closed to achieve valve's open and closed.

手动液压刀闸阀由是由液压缸活塞杆连接阀门闸板，其操作原理手动驱动液压泵手柄把液压油通过手动换向阀压入液压缸的上下腔来带动活塞杆做上下动作，从而带动闸板的启闭来达到阀门开关作用。

The sluice-gate control system is a SCADA system (data capture 、 data surveillance and data control), the functions of which are to capture, monitor and control the central data , capture data digitizedly and distributively , transmit data gradedly , display in multiple modes , and so on . The system makes the process of opening and closure of the sluice-gate simple, convenient, flexible and stable . It can discharge reasonably by using the fewest mechanical and electronic devices , and attain the best effect of the intellectual SCADA system in the loading capability of the sluice-gate .

闸门监控系统是一个可进行中央数据采集、监视和控制的，集数字化、分布式数据采集，分层数据传输，多种显示方式等功能于一身的SCADA系统，使得闸门启闭过程更加简捷、方便、灵活、可靠，功能更强大，从而达到使用最小的机电设备与能耗，获得最合理的排放，并充分发挥计算机智能SCADA系统对闸门运载能力的最佳效果。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。