本文简单介绍了光电效应测普朗克常数实验的基本原理及测量截止电压的三种方法。
The paper introduced the method of measuring Plank's constant by determining the cut-off voltage in photoelectric effect experiment.
介绍了光电效应实验中通过确定截止电压测量普朗克常数的方法，并分析了实验中产生误差的原因，指出减小误差的方法。
This paper briefly introduces the basic principles to measure plancks constant by photoemission and the three methods to measure cut-off voltage.
通过三电极电池研究发现，锂离子电池在低温充电过程中出现的金属锂的沉积与电解液种类、充电倍率和截止电压等因素有关。
We found by the three-electrode experimental cell, deposition of metallic lithium during low-temperature charging is related to electrolyte, charging rate, cut-off voltage and so on.
采用数字信号处理器（DSP）控制器，设计了具有电压前馈和电流截止负反馈的转速闭环弱磁调速系统。
The speed adjusting system with field weakening with voltage feedforward, current closed negative feedback and speed closed loop was designed by adopting digital signal processor (DSP).
根据“虚短”和“虚断”的特点，可得到电路的通带电压放大倍数和通带截止频率。
According to "virtual short" and "virtual-off" feature, available to the circuit passband voltage gain and pass-band cut-off frequency.
在电压一定时，找到了基膜的截止波长。
I find several cutoff wavelength wavelength under different voltage.
当频率高于截止频率时，随着频率的升高，电压放大倍数将降低，由此电路具有“低通”的特性。
When the frequency is higher than the cut-off frequency, as the frequency increases, voltage amplification factor will be reduced, thus the circuit has a "low-pass" characteristics.
由于Q2的基极-发射极的电压为0V而截止，因此没有负载电流流过r6。
Consequently, no load current flows through R6 because Q2, whose base-emitter voltage is now 0v, has turned off.
改进后逆变器输出滤波器的截止频率可以取较高值，保证足够的控制系统带宽，有效提高逆变器输出电压波形质量。
The cut-off frequency of improved inverter output filter can be set higher to ensure the bandwidth of control system and improve the waveform quality of inverter output voltage.
该线电压极性检测电路检测线电压的 极性且控制该驱动电路以导通或截止该栅控晶体管。
The line voltage polarity detection circuit detects the polarity of line voltage and controls the drive circuit to conduct or cut off the gate-controlled transistor.
该线电压极性检测电路检测线电压的 极性且控制该驱动电路以导通或截止该栅控晶体管。
The line voltage polarity detection circuit detects the polarity of line voltage and controls the drive circuit to conduct or cut off the gate-controlled transistor.
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