他们测量其平行于层的电阻，发现它放置在一个磁场干扰的地方时下降了约1.5%。
They measured the electrical resistance parallel to the layers and found that it dropped by about 1.5% when they placed it in a magnetic field.
通过事先在混凝土中植入电极，余教授可通过测量电阻的变化而得知过往车辆对路面的挤压情况。
By embedding electrodes into it as it sets, Yucan measure changes in electrical resistance to detect compression frompassing cars.
这个装置在新闻界常常被用来和测谎仪相比较，它用来测量一个人在回答听析师所提出的问题时，身体的电阻有什么变化。
The device, often compared in the press to a polygraph, measures the bodily changes in electrical resistance that occur when a person answers questions posed by an auditor.
测量高电阻时两个最常见的误差来源是静电干扰和泄漏电流。
The two most common error sources when measuring high resistance are electrostatic interference and leakage current.
在测试电路中，高绝缘电阻是成功地进行静电计测量的首要要求之一。
High resistance insulation in the test circuits is one of the first requirements of making successful electrometer measurements.
在该图中，我们测量一个多管脚的连接器中某个管脚与其它所有管脚之间的绝缘电阻。
This diagram shows measuring the insulation resistance between any one pin and all other pins on a multipin connector.
该测试在两个不同的电压之下进行电阻测量，然后计算出电压系数。
This test makes resistance measurements at two different voltage levels, then calculates the voltage coefficient.
跨接在电压源上的任何外部分流电阻都会使测量的电压衰减，如图2 - 3所示。
Any external shunt resistance across the voltage source will attenuate the measured voltage, as shown in Figure 2-3.
测量通道1输入和通道2输入之间的电阻。
这样，在不测量该电阻器时，该电阻两端存在的电荷就会通过电路的LO端放电。
This allows any charge across the resistance to be discharged to circuit lo when the resistance is not being measured.
最后，由于减小了建立时间，所以采用加电压测电流的方法测量电阻一般比较快。
Finally, the source voltage, measure current method of resistance measurement is generally faster because of reduced settling times.
如果使用分离的电流源和电压表来进行低电阻测量，则必须检查每台仪器的非欧姆接触情况。
If using a separate current source and voltmeter to make low resistance measurements, each instrument must be checked for non-ohmic contacts.
很多低电阻测量是在诸如开关、连接器和继电器接点等器件上进行的。
Many low resistance measurements are made on devices such as switches, connectors, and relay contacts.
噪声能够严重地影响灵敏的电流测量工作。本节讨论源电阻和源电容如何影响噪声的性能。
Noise can seriously affect sensitive current measurements. This section discusses how source resistance and source capacitance affect noise performance.
这些电阻器的阻值应当使其在最大测试电流时的电压降不会影响测量的准确度。
These resistor values should be such that the voltage drop at the maximum measured current will not affect measurement accuracy.
泄漏电流是由测量电路和附近的电压源之间的寄生电阻通路产生的。
Leakage currents are generated by stray resistance paths between the measurement circuit and nearby voltage sources.
至此，我们已经讨论了专门针对电压、电流、电阻和电荷测量所要考虑的问题。
So far, we have discussed considerations specific to voltage, current, resistance, and charge measurements.
仪器自动地计算和显示出测量的电阻值。
It automatically calculates and displays the measured resistance.
在进行高电阻测量时，电路的建立时间特别重要。
The settling time of the circuit is particularly important when making high resistance measurements.
在测量高电阻源时要考虑的另一个问题是电压表的输入偏置电流。
Another consideration when measuring voltages from high resistance sources is the input bias current of the voltmeter.
已经设计出专门的探头来测量半导体晶圆片和半导体棒的电阻率。
Special probes have been designed for making resistivity measurements on semiconductor wafers and bars.
因此谨慎的做法是定期地用静电计欧姆计来测量测试夹具和电缆的绝缘电阻，以保证其完整性。
Therefore, it's prudent to measure the insulation resistance of the test fixtures and cables periodically with an electrometer ohmmeter to ensure their integrity.
这种方法的好处是速度非常快，根据电源电压和所用绝缘材料的情况，使用这种方法可以测量阻值极高的电阻。
The advantages of this method are that it's fast and, depending on the power supply voltage and insulating materials, it allows measuring extremely high resistance.
加上出色的直流电阻稳定，分流可用于直接测量电流通过他们的全部带宽。
Combined with excellent dc resistance stability, the shunts can be used to directly measure current through their full bandwidth.
双支铂热电阻主要用于需要由两个显示仪表同时测量和调节同一地点温度的场合。
Two-branch platinum thermal resistance mainly used in occasion of the same place temperature was measured and adjusted by two display instrument.
对同一低电阻分别用伏安法、双电桥、双“单电桥”进行测量，几种方法的测量结果相当吻合。
To measure the same low resistance with methods of Volt- Ampere , double bridge and double 'single bridge', we can get the same results.
发现接触电阻的大小和稳定程度对测量结果有极大的影响。
It is found that the magnitude and stability of contact resistance greatly affect the measuring results.
本节详细介绍如何使用这些测试夹具来进行表面电阻率和体电阻率的测量，以及测量电阻率时使用的变换极性和变换电压的技术。
This section details how to make surface and volume resistivity measurements with these test fixtures, as well as the Alternating Polarity and Alternating Voltage techniques for measuring resistivity.
然后仪表通过同一套测试引线来测量电阻两端的电压，并计算出相应的电阻数值。
The meter then measures the voltage across the resistance through the same set of test leads and computes the resistance value accordingly.
电阻率的测量方法是测量电阻，然后再考虑几何因素将其变换成表面电阻率或体积电阻率。
Resistivity is determined by measuring resistance, then converting to surface or volume resistivity by taking geometric considerations into account.
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