本文主要介绍了别克新世纪轿车燃油泵控制电路的工作原理和检测方法，一是用万用表检测，二是用扫描仪检测。
This paper mainly introduces two inspecting methods of fuel pump controlling current on BUICK NEW CENTURY car: one is inspecting with multimeter; the other is inspecting with scanner.
阐述了自制WY - 1a型万用表实验仪的电路设计原理、计算公式及组装技术。
The circuit design principle, calculating formula and assembly technique of self - made WY - 1a multimeter experiment instrument are elaborated.
然而，传统的测量仪器如示波器，万用表，逻辑分析仪等都只是针对某一些信号或者电参数的测量。
However, the traditional measuring instruments such as DSO, DMM, Logic Analyzer have only focus on a certain number of signal or electrical parameters.
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