直流毫伏表是常用的测量仪器，采用数字方式可以使操控更直观，而且反应速度快，是理想的毫伏范围测量工具。
DC millivolt table is commonly used measuring instruments, the use of digital manipulation can make a more intuitive, and fast response, is an ideal measurement tool millivolt range.
这是一台光谱测量范围宽、测量重复性好、自动化程度高和测量速度快的标准仪器。
It can be used as a standard instrument for the calibration of radiance and irradiance, with high level automation and faster measurement speed.
虽然本书的重点是直流测量，但是要分析噪声和仪器响应速度的问题，就需要简单地讨论一下电子电路中时间和频率的关系。
Although this handbook stresses DC measurements, an analysis of noise and instrument response speed requires a brief discussion of time and frequency relationships in electronic circuits.
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