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An N-channel VDMOS I - V curve is measured after X-ray radiation under condition of different power dissipation. It is found that the property of new interface traps induced by X-ray radiation of self-annealing VDMOS sample does not conform to existing theory reasonably well.

利用X射线对一种N沟VDMOS在不同的负载功率下进行了辐射试验,采用电流-电压测试方法发现这种H2-O2氧化栅介质VDMOS样品存在自退火效应时,新增界面陷阱特性与通常的理论不能够很好地一致。

The effect of the dispersion in oxide energy gap on the tunneling current is also studied.

还研究了介质层能隙中的色散对隧穿电流的影响。

An optical source usedto pump XeF laser is introduced.The discharge breakdown property,the current as afunction of charge voltage in different gas,the discharge homogeneity and the effect ofdifferent gas composition on the discharge radiation have been experimentally studied.

介绍了一种用以泵浦XeF激光的横向表面放电辐射源,比较详细地研究了这种泵浦源的放电击穿特性、放电电流与充电电压及不同气体介质的关系、表面放电均匀性以及不同气体成分对表面放电辐射特性的影响。

The mechanism of electrocatalytic reduction, the classification and selection of electrode and catalyst and the effect of temperature, current density and pressure on the selective and Faradaic efficiency of reduction are discussed.

介绍了在水溶性介质中利用电化学催化的方法还原CO2的研究现状:电催化还原机理、电极材料催化剂的分类和选择;综述了温度、电流密度以及压力等对还原选择性和法拉第效率的影响;展望了CO2电催化还原方法的研究方向和应用前景。

So in the solution studied the HSI mode could be used in pulsed current cathodic protetion system.

因此,在所研究的介质中高硅铸铁阳极可以用于方波脉冲电流阴极保护。

The method to compute magnetometric resistivity response of a point current source in a layered medium was introduced.

介绍了点电流源层状介质模型磁电阻率法响应的模拟方法。

Magnetometric resistivity; layered medium ; point electric current source ; gas hydrate

磁电阻率法;层状介质;点电流源;天然气水合物

Finally, in chapter 7, a simple method for the determination of critical micellar concentrations of SDS in different media was proposed based on current-monitoring.

第七章建立了一种简单的利用电泳谱图上电流的变化测定表面活性剂SDS在不同介质中的临界胶束浓度的新方法。

Practical microstrip antenna problems, such as the effect of superstrate on input impedance and radiation pattern are studied.

根据所得的新公式建立了多层介质覆盖矩形贴片微带天线的积分方程,并利用有效的数值技术求解出上述方程,得到了贴片上的电流分布,进而求出天线输入阻抗和辐射方向图。

The results showed that when retrogressed by electrical current heating at 200 ℃ the tensile strength in re-aged 7A04 alloy extrusion bar of 60 mm in diameter reached 620-640 MPa and a uniform elongation appeared from central part to surface layer of the sample while the fracture time in test of resistance to stress corrosion under a load stress of 375MPa in 3%NaCl+0.5%H2O2 corrosion solution was greater than 30 d.

结果表明,直径60 mm的7A04铝合金棒材在200℃电流直接加热回归后再时效,从心部到表层的拉伸强度为620-640 MPa,延伸率均匀一致;在3%NaCl+0.5%H2O2水溶液介质中和375 MPa应力下的应力腐蚀断裂时间大于30d,而辐射式加热回归的为575 MPa,延伸率从心部至表层表现极不均匀,应力腐蚀断裂时间只有19 d。

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