微安

本文评述了极低闽值电流（在微安范围内）、较高调制带宽、较窄谱线宽和低的温度灵敏度的半导体量子线（QWR）激光器的优异性能。

In this paper , high performances are reviewed of semiconductor quan - tum wire ( QWR ) lasers with extremely low threshold currents ( in the μ A range ), considerably high modulation bandwidth and narrow spectral linewidth and low temperature sensitivity .

它导致了一个250000毫微安的电流流过我们。

It causes a current of250,000 nanoamperes to flow though us .

微安表内阻测量的误差分析

Error Analysis of the Inner - resistance Measure of the Microammeter

几种微安表内阻测量方法比较

Comparison of Some methods of Surveying the Internal Resistance in Micro-ampere-meter

微安表改装欧姆表实验的研究

An experiment research on changing the microampere meter to an ohm meter

替代法测量微安表内阻的不确定度分析

The uncertainty analysis of measuring inner-resistance of micro-ampere-meter with the substitute method

嘴里冰冷的兵器让他稍微安了点心。

The taste of cold iron in his mouth gave him comfort .

我们的智力活动只需要大约一个毫微安的电流。

Our brains work on currents near one nanoampere .

在测量微安表内阻的众多方法中，替代法是最简单的方法。

Among the methods of measuring inner-resistance of micro-ampere-meter with the substitute method is the most simple one .

太阳能电池是一个电池，即使在黑暗中，并通常会显示几个微安的电流。

The solar cell is a battery , even in the dark , and will usually show a few microamps of current .

然而，电话线路只能支撑约500微安的负载，这成为采用电话线路供电的基本障碍。

However , the telephone lines can only support a load of about 500 uA , which uses telephone lines to become a fundamental obstacle to power .

导出了微安表内阻测量的误差公式，并对它的特例&等偏法及半偏法进行了分析。

This paper introduces the formula for measuring errors of the inner-resistance of the microammeter , meanwhile showing detailed analysis of its special case & equal and partial measures .

本文介绍如何通过调整电路参数，实现仪器空白调零、满偏调整，特别介绍了用普通微安表代换原表头的方法。实验结果表明，维修后的仪器能满足实验要求。

The zero adjustment and full scale adjustment can be realized by adjusting circuit parameters , The method for replacing the original mter with a commonly used ammeter is described .

根据安培检测和恒电位器原理，利用数据放大器采集放大微弱信号，研制了一种新型微安培检测器。

A new micro-ampere detector , which uses the data amplifier to enlarge the weak signal , is developed according to the principle of the ampere detection and the potentiostat .

温度的变化引起热敏电阻阻值的变化，从而使电桥失去平衡，引起流过微安表的电流发生变化。

A changed temperature lead to the change of value of the thermistor , then the bridge balance broke up , which induced the change of current value to the microammeter .

在二级管特性研究中，由于电磁波的影响引起的微安表零点飘移对测定结果有较大影响。

In the studying of the specific property of the diode , the zero drift of the microammeter is caused by electromagnetic wave , and it has great effects on the result of the measure .

根据系统仿真，微安级的系统运行电流表明电路实现了低运行电压、低功耗的目的；

According to the system simulation , the implementing current in system is at the level of microampere , demonstrating that we have realized the object of circuits on low supply voltage with less power dissipation ;

测量的单位是安。通常电流用安、毫安、微安、表示，偶尔也可以用皮安来表示。

The unit of measure is the ampere , or amp , with currents usually expressed in amperes ( A ), milliamperes ( mA ), microamperes (μ A ), nanoamperes ( nA ), or occasionally picoamperes ( pA ) .