This small resistance is normally measured with a DMM or a micro - ohmmeter.

这个小的电阻值通常用数字多用表或者微欧姆计来测量。

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A typical lifetime test system includes a communication analyzer, power supplies, a handset controller, audio test instruments, and a DMM.

典型的寿命测试系统包括一台通信分析仪、电源、一个手机控制器、音频测试仪器和一台数字多用表（DMM）。

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Given these DMM characteristics, it's not possible to use a DMM to measure signals at levels close to theoretical measurement limits, as shown in Figure 1-3.

数字多用表的技术特性决定了其不可能测量接近理论极限的信号，如图1 - 3所示。

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On December 5th, Direct Merchandise Marketing (DMM) released a long-awaited statement that was supposed to explain just what had gone wrong in shipping its Matrix One tablet, a device we thought we might never see.

ENGADGET: Ginsu knives, psychic hotlines and a $90 tablet: the story behind the Matrix One (update: more details)

While most of us have been focused on the Matrix One, DMM was, for a time, running another brand, Pacatek, which was also supposed to be making low-end Android tablets.

ENGADGET: Ginsu knives, psychic hotlines and a $90 tablet: the story behind the Matrix One (update: more details)

Customer phone calls (including those from readers) were either ignored or met with responses that DMM was closed, just a few days after orders were supposed to have shipped.

ENGADGET: Ginsu knives, psychic hotlines and a $90 tablet: the story behind the Matrix One (update: more details)