题目内容：

英语翻译
该设计以锁相放大器SR844为核心器件,确定了系统的激励和检测线圈,完成了对滤波电路和放大电路的设计率,并对所设计的系统进行实际搭建及调试.

优质解答

The design,using phase-locking amplifier SR844 as a key part,makes sure about the systematic excitation and detecting coil,finishes the design ratio of the filter circuit and amplifier,and factually builds and tests all the designing system

追问：

自己翻译的吗？还是用什么工具？

追答：

自己翻的啊