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.
这个小的电阻值通常用数字多用表或者微欧姆计来测量。
This small resistance is normally measured with a DMM or a micro - ohmmeter.
终端电阻法：在最后一台485设备的485 +和485-上并接接120欧姆的终端电阻来改进通讯质量。
Terminal resistance method: to improve the quality of the communication on the 485 + and 485 - of the last 485 devices with a termination resistor of 120 ohms.
每一盏灯泡有120欧姆的电阻。
为了使375现场通讯器正常工作，HART回路中必须至少存在250欧姆的电阻。
In order for the 375 Field Communicator to function properly, a minimum of 250 ohms resistance must be present in the HART loop.
与数字多用表不同，微欧姆计没有内部电阻器(RS)，所以四条引线都要连接才能进行测量。
It doesn't have the internal resistors (rs), as in the DMM, so all four leads must be connected to make a measurement.
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.
电阻的测量单位是欧姆。
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).
电阻是欧姆来度量的。
接触电阻一般非常小其范围在微欧姆到几个欧姆之间。
This resistance is normally very small, ranging from micro-ohms to a few ohms.
静电计欧姆计的电流激励(IR)流过未知电阻(RS)，然后测量dut上的电压(VM)。
Here, an electrometer ohmmeter is forcing a current (IR) through the unknown resistance (RS) and then measuring the voltage (VM) across the DUT.
欧姆定律—在直流电路中，电压，电流与电阻的关系。
Ohm's Law - relationship between voltage, current and resistance in D. C. circuit.
我们取发射极基极电阻的典型值为250欧姆左右。
We shall take the typical emitter-to-base resistance as about 250 ohms.
因此电阻率也是常数，并遵循欧姆定律。
因此电阻率也是常数，并遵循欧姆定律。
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.
从分析实际欧姆表测电阻全过程的误差出发，导出测量不确定度的算式，最后得出表尺最佳段范围。
Analyzing the error of ohmmeter in measuring resistance, the measurement formula of uncertainty is derived, and the best measuring range of ohmmeter is obtained.
在物理学中，一个众所周知的定律叫欧姆定律，根据这个定律我们可以知道电流，电压和电阻之间存在的关系。
In physics, one of the well-known laws is Ohm's law, on the basis of this law we can know the relation of the current, the voltage and the resistance.
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.
每一盏灯泡有120欧姆的电阻。
本文介绍了一种直接测量毫欧姆级电阻的方法，相对于比较法更快速精确。
This article introduces a way that the milliohm resistance is measured straight by means of the high precision and big current source.
欧姆定律告诉我们：电流等于电压除以电阻。
Ohm's law tells us electric current is equal to voltage divided by resistance.
欧姆定律告诉我们：电流等于电压除以电阻。
Ohm's law tells us electric current is equal to voltage divided by resistance.
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