二极管对

Measurements of the forward I-V characteristics of these diodes have shown that thermionic emission current is the dominant current conduction mechanism for these Schottky contacts.

对研制的器件特性进行了比较分析，I-V特性测量说明Pt／6H-SiC肖特基二极管有较好的整流特性，热电子发射是其主要的输运机理，理想因子为1.23，肖特基势垒高度为1.03eV，开启电压约为0.5V。

The simulation results show that the three models are all selfconsistent with electromagnetic field. Gauss law model tends to be affected by the width of the first cell and yield nonphysical oscillation. 1D diode model with reasonable discrete grid gets almost the same results as Child law model, but it needs to solve a transcendental equation, which would cost much time.

模拟结果表明，三种模型都能与电磁场自洽并反映外加磁场对发射电流的影响，但高斯定律模型受网格剖分粗细程度的影响较大且容易产生振荡，一维二极管模型在网格参数合理的情况下结果与查尔特定律模型基本接近，但需要求解超越方程，花费时间多。

A numerical method is presented to analyze the discharge process of REB accelerator with Blumlein forming line. This method can deal with the conducting delay of the gas switch and the impedance variation of the vacuum diode during the discharge process. We calculated the voltage waveform on the diode.

提出的分析强流电子束加速器放电过程的方法可对具有导通时延的气体开关、Blumlein脉冲形成线、阻抗非恒定的真空二极管负载组成的放电系统进行数值计算，所得负载上电压波形能较好地与实验符合

High performance liquid chromatography-photodiode array detection-elctrospray ionization mass spectrometry (HPLC-PAD-ESI-MS) method was used to determine secoisolariciresinol diglucoside qualitatively and quantitatively. Precision, stability, limits of quantification, SDG recovery and sample preparation method were studied.

采用高效液相色谱－二极管阵列检测－电喷雾质谱(HPIC-PAA-ESI-MS)法对开环异落叶松树脂酚二葡萄糖苷进行定性和定量检测，研究方法的精密度、稳定性、定量检测限及加样回收率，并考察样品制备方法对定量检测结果的影响。

The main concent include:(1) the modeling for IGBT, Diode, and three-level inverter system based on PSIM software package;(2) simulation and experiment were done for every subcircuit of the inverter, and analysis was given in the paper for three-level inverter.(3) designd the driving and protecting circuit for the IGBTs.

主要内容包括：(1)构建了基于PSIM软件包的IGBT、二极管模型；(2)构建了基于PSIM的三电平变频调速系统模型；(3)对系统中各个支路的电参数进行了仿真和实验，给出了系统的一般设计方法；(4)设计了一套适用于三电平逆变桥的IGBT驱动电路。

Methods In the first experiment, 48 rabbits were inflicted with a posterior subglottic injury using a diode laser, and there were 10 unwounded controls.

在第一阶段实验中，以二极管激光对48只兔子造成声门下后壁损伤，10只未损伤的作为对照。

This fault diagnostic method is simple to use, and suitable for inverter paralleling system with arbitrary quantities of modules.

由于二极管的阻断作用，故障模块不会对并联输出造成影响。

The mobile phase was 0.1 mol/L ammonium oxalate + N,N-dimethylformamide + 0.2 mol/L diammonium phosphate (75+15+10, by vol) adjusted to pH 8 by aqueous ammonia. Column temperature was 30℃, flow rate was 0.8 ml/min, and detection wavelength was 365 nm.

使用C18反相柱和二极管阵列检测器，以0.1mol/L草酸铵溶液+二甲基甲酰胺+0.2mol/L磷酸氢二铵溶液=75+15+10(用氨水调pH值至8.0左右)为流动相，柱温30℃，流速0.8ml/min，检测波长365nm，外标法对水合霉素的有效成分进行定量分析。

B DC high voltage power supply circuit short circuit, high voltage filter capacitor should check whether the breakdown leakage current, filament transformers for filament winding of whether the earth leakage, tube bracket fixed capacitor (high-frequency coupling capacitor) whether the breakdown leakage, rectifier diodes have breakdown short-circuit phenomenon

b 直流高压供电回路短路，应检查高压滤波电容是否击穿漏电、灯丝变压器的灯丝绕组是否对地漏电、电子管支架固定电容是否击穿漏电、整流二极管是否有击穿短路现象

Nm LED was chosen as excitation source,Rose Bengal was used as photosensitizer,early oral tumor can be detected.

采用405 nm发光二极管作为激发光源，选用孟加拉红作为光敏剂，可对早期口腔肿瘤进行诊断。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷