虚拟仪器是数字信号处理与计算机技术相结合的产物，一般由硬件平台和应用软件两大部分构成。
Virtual instruments is a combination product of the digital signal processing and computer technology, generally composed of hardware platforms and software applications.
此文件描述一般开关电源供应器的测试仪器及其特性。
This document describes general equipment used in switching power supply testing and their characteristics.
这种仪器作为一般的标定是很精确的。
The instrument is very delicate for general calibration purposes.
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