图2-33示出静电计欧姆计测量电阻(R)的情况。
Figure 2-33 shows the electrometer ohmmeter measuring a resistance (R).
欧姆表是测量电阻的一种仪表,它被广泛地应用在电气工程中。
An instrument for measuring electric resistance, the ohmmeter is widely used in electrical engineering.
然而,有的静电计和皮安计内部装有电压源,能够直接测量电阻。
Some electrometers and picoammeters, however, have a built-in voltage source and are capable of measuring the resistance directly.
在电工中,最常用的单位是用来测量电阻、电流、电压和功率等等。
In electrical work the most common units are for the measurement of resistance, current, voltage, electrical power and all that.
闭合通道1并测量电阻。验证lo通道电阻在规定的技术指标范围之内。
Close ch. 1 and measure the resistance. Verify that the lo channel resistance is within the published specification.
所使用的传感器为精度最高的PT 100温度传感器,能直接测量电阻变化。
The sensors that are used are highest precision PT100 sensors, which are able to directly measure a changing resistance.
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.
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.
欧姆计是一种很有用的仪表,可以用来迅速地测量电阻,尽管它不是一种精密仪表。
Although not a precision instrument, the ohmmeter is a useful device for rapid measurement of resistance.
介绍了计算法测量电阻应变的原理及试验,着重分析了试验结果,验证了测量原理。
The principle of measurement of resistance strain with calculating is introduced. An experiment is conducted to verify it and analysis on the test validates it.
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.
本文对测量电阻的多种电桥法进行了介绍,并分析了各种方法的使用范围及改进方法。
A number of methods of electric bridge to measure resistance are introduced. The scope of the application and the means of improving every method are analysed.
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.
可以使用第3.2和3.3节所介绍的低电压和低电阻测量工作中使用的技术来测量电阻。
The resistance is measured using the techniques described in Sections 3.2 and 3.3 for low voltage and low resistance measurements.
根据损伤力学原理,用双臂电桥测量电阻的方法,研究了珠光体球墨铸铁的疲劳损伤演变规律。
According to the principle of damage mechanics, the evolutional law of fatigue damage of pearlite ductile cast iron was studied with double arms electrical bridge for measuring electrical resistivity.
本文分析了非平衡电桥的测量原理及灵敏度,提出了一种测量电阻温度系数的方法,实测结果说明该方法是正确的。
Measuring principle and sensitivity of non-balanced bridge is analyzed. A method of measuring temperature coefficient of resistance by this bridge has been discussed in this paper result is accurate.
图4 -44示出一个基本的测量超导体电阻的测试系统。该系统使用2182a型纳伏表和6220型电流源来测量电阻。
Figure 4-44 shows a basic superconductor resistance measurement test system using the combination of a Model 2182a Nanovoltmeter and a Model 6220 Current Source for measuring the resistance.
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.
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.
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.
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.
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.
电路绝缘电阻测量。
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.
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.
本文将对常规得低电阻测量方法进行分析。
This will be a low resistance measurements conventional methods for analysis.
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.
采用恒流法,可以使用静电计电压表和电流源或者只使用静电计欧姆计来测量高电阻。
High resistance measurements using the constant-current method may be made using either an electrometer voltmeter and current source or just an electrometer ohmmeter.
定期测量绝缘电阻,检查机壳接地情况。
Periodically measure insulation resistance, inspect motor sheath grounding.
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